Description, classification, synonyms of Phylum Chordata - Chordates. They are found in a variety of habitats – polar ice caps, deserts, mountains, forests, grasslands and dark caves. The classification system of fish is not stagnant and it will change when we have more knowledge, perhaps from DNA analyses. Fertilization is external and development is mostly indirect. They are active in both warm and cold environments. Heart is imperfectly four-chambered, two auricles, the ventricles being divided incompletely by a septum into two. They have neural tube with rudimentary neural arches. Excretory organ, known as kidney is metanephric, urine is semi-solid. Vertebrata. They have heterocercal tail; in this case, tail is unequally bifurcated. Respiratory and excretory systems are well-developed. Paedophryne amauensis is the world smallest amphibians, found in Papua New Guinea which grows up to 7.7 mm in length while the largest living amphibian is Andrias sligoi (South China giant salamander) which grows up to 1.8 m in length (5 ft 11 in). Larval forms are free swimming; some are solitary or form colonies. No conjugation. Phylum Chordata chordates. In the adults, however, these are totally obliterated and become transformed into other organs like endocrine system. The chordates are bilaterally sym­metrical, triploblastic, coelomate animals. The main function of notochord is to support nerve cord. CEPHALOCHORDATA, SUB-PHYLUM: 3. Four diagnostic features characterize species in the phylum Chordata: 1) The notochord is a malleable rod running the length of the organism’s body, to which the rest of the skeletal structure relies upon for foundational support; 2) the presence of a tail extending past the anus; 3) a hollow, dorsal nerve cord (becomes the spinal cord in humans! Some warm-blooded animals, especially birds, migrate from colder to warmer regions in the winter. Chordate characteristics disappear in the adult but it persists in the larval stage. The invertebrate subphylum Tunicata consists of the marine tunicates, including the ascidians and salps. Classification of Chordata; PHYLUM CHORDATA. There are about 10,000 living species of birds in the world that inhabit in nearly all habitats on Earth. The skin of mammals is unique in possessing hair. Central nervous system is dorsal, hollow and single. Phylum – Chordata – Division In Vertebrata: Cyclostomata, Pisces, Chondrichthyes, Osteichthyes, Amphibia, Amphibia, Reptilia, Aves, Mammalia. Hemichordata, Echinodermata, and Chordata form a branch of the animal kingdom called Deutrostome. All the vertebrates are placed under the single sub-phylum Vertebrata or craniata. Prices Down by 10% + Save 50% + Extra 5% OFF, Classification of Vertebrata (Phylum Chordata), Classification of Animal Kingdom (Animalia), Salient Features of Different Phyla in the Animal Kingdom, Copyright © 2016-21 Pmfias.com. Classification. Phylogenetic classification of Life, with emphasis on Phylum Chordata. The common examples of this phylum are Blanoglossus and Saccoglossus. All rights reserved |, Irrespective of the package you choose, Current Affairs of Geography, Environment, Sci & Tech and Indian Agriculture are available from, Current Affairs of Art and Culture and Indian Economy are available from, Once the payment is made, you need to log in to the. In the higher chordates, this is replaced by a bony vertebral column at a later stage. The class Osteichthyes is the largest group of vertebrates in the world and it contains more than 30,000 fish species which account for about 96% of all fish species. The body is divisible into three regions, a proboscis, a collar and a trunk, the anterior end of which bears gill slits. In this case, swim bladder is replaced into lungs. It is the dominant group of vertebrates which comprises nearly 99% of the more than 30,000 fish species. In few cases, development is indirect with a larva, known as leptocephalus such as. Most of the food consumed is utilized to maintain a constant body temperature. They inhabit in all sort of waters such as fresh, marine, brackish-water environment. Examples: Oviparous – Platypus (Ornithorhynchus anatinus); Viviparous –  Royal Bengal Tiger (Panthera tigris),Red kangaroo (Macropus rufus), flying fox (Pteropus vampyrus), Short-beaked common dolphin (Delphinus delphis) ,  blue whale (Balaenoptera musculus) , etc. The ctenophores are marine animals with comb plates. They have 2-chambered heart, one auricle and one ventricle with sinus venosus and conus arteriosus. This class does not contain sharks, rays, skates, lampreys and hagfishes. Mouth is mostly. Some amphibians perform internal fertilization such as Salamander and Ichthyophis (blind worm). Phylum Chordata is divided into three subphyla: Urochordata, Cephalochordata, and Vertebrata. Dorsal tubular nerve cord: It is a single hollow nerve cord which consists of bundle of nerve fibers that exists dorsally along the antero-posterior axis of the body, just above the notochord. Ciliated nephridia serve as the excretory organs, U shaped with solenocytes. The arthropods are the most abundant group of animals characterised by the presence of jointed appendages. Classification Taxonomy. We have learnt that some animals give birth to young ones while some animals lay eggs which later develop into young ones. amzn_assoc_search_bar = "true"; They are found in various environment; some live in marine habitat, some in freshwater and others in terrestrial environments. They may be acoelmate, pseudocoelmate or truly coelmate organisms. They also have proper nervous system, circulatory system, and a skeletal system that provides proper shape and support. A. Amphibians (Use National Aquarium Fact Sheet) 1. During hibernation these animals live off of stored body fat and can drop their body temperatures significantly. In this case, asexual reproduction occurs by budding. DEFINITIONS AND KEY POINTS OF ANIMAL BEHAVIOR DEFINITIONS AND KEY POINTS Answer of Question of Temperature & Body Fluid Regulation About The Author saadia. Hibernation is a state of inactivity and metabolic depression in few endotherms [warm blooded animals – bear, rodents] and ectotherms [many reptiles like snakes, turtles and amphibians like frogs]. If you purchase the notes with “Download Validity == 1 Year,” on 26/01/2021, then you will be able to download the Static Files + Current Affairs files till 27/01/2022. They do not have external ear openings. ... ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Heart is two-chambered (one auricle and one ventricle). amzn_assoc_search_bar = "true"; They maintain a constant internal body temperature irrespective of external, Their body temperature changes according to the external environment. Group ACRANIA (=PROTOCHORDATA) (Primitive chordates without head and vertebral column) Subphylum HEMICHORDATA, Balanoglossus,Cephalodiscus, Rhabdopleura, primitive and doubtful chordates, now classified under non-chordates after echinoderms. Most of the food consumed is converted into body mass. They are present in deep and cold waters. There are about 8,000 living reptiles species in the world today that inhabit all continents on Earth except Antarctica. Slide 2 Classification Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Reptilia Orders: Crocodilia Sphenodontia Squamata Testudines Slide 3 Characteristics Ectothermic(Cold-blooded) Regulate body temperature by seeking or avoiding sun. You might also read: Detailed Classification of Extant Reptiles. Modern Reptiles are characterised by the presence of dry and cornified skin. Phylum Hemichordata Hemichordates are widely distributed in shallow, marine and tropical waters. amzn_assoc_marketplace = "amazon"; Urochordata (tunicates) It is also known as Tunicate because the body of an adult is enclosed within a tunic made up of cellulose -like substance known as tunicin. Choose from 500 different sets of chordata biology phylum classification flashcards on Quizlet. The chordates were originated from a fish-like ancestor, very similar to the larva of the Ascidia (Tunicata) and it is assumed that they became the ancestor of the chordates by retaining the larval form throughout the life. Among them, most organisms belong to the subphylum, Vertebrata. The group includes vertebrates, with some closely related invertebrates. PHYLUM CHORDATE-CLASSIFICATION Phylum Chordate is divided into three Sub-Phyla. They are oviparous and development is direct. Oral and atriporal apertures are at opposite ends. At different stages in their life, chordates show the following four features. The eyes have eyelids. The skin of the body is covered by scales like cycloid, ctenoid or ganoid. 2 Year Validity == Validity of the Download links (both Static & Current Affairs) is 2 Years from the date of purchase. 1. Vertebrate Classification: Phylum Chordata. They have no jaws; the skull is largely or completely roofed by membrane. To stay cool, warm-blooded animals usually sweat. Generally, they do not have any spiracles. amzn_assoc_asins = "B00DQZ64YC,B004WYX4AS,B000A38F3Q,B000A2KAXU,B002C014JW,B0000ANHSZ,B002R0F9LG,B0012M2O90,B007HJFVNI"; They are also known as ray-finned fishes due to lepidotrichia or fin rays. The skin is thin, loose and dry with flight muscle in the thorax; sweat gland is absent. So they need less food compared to warm blooded animals. Source | Credits | Picture Credits: NCERT General Science, Copyright © 2016-21 Pmfias.com. Animals in the phylum Chordata may not all have a spine (some do, which would additionally classify them as vertebrate animals), but they do all have a notochord. They … Their regeneration power is usually good. Many chordates provide food for human beings and many chordates release their excretion to the environment, provide nutrients and minerals to the ecosystem which boost up the plants growth. It is air filled organ arising from the dorsal wall of the oesophagus. The vertebrate possess a ‘back-bone’ which is the most characteristic features of the vertebrates. Chordata: information (1) Chordata: pictures (15057) Chordata: specimens (6829) Chordata: sounds (709) Related Taxa. They have usually homocercal symmetrical caudal fin. The body does not contain any scales. Hind limbs are adapted for walking, swimming, perching or clasping. But in the lung fishes, the heart is three chambered with two auricles and one ventricle. In a few cases. Paired lateral appendages are present in the form of limbs or fins. Their body is very light with pneumatic bones. Subscribe to our newsletter and never miss an important update! Generally, blood vascular system is absent;  if present, it may be open or closed type. SUB-PHYLUM: 1. They have very keen sense organs with very good eyesight. Classification. As such, they obtain their nutrition from external sources. The vertebrata sub-phylum is called CRANIATA group. SUB-PHYLUM: 1. Subject: Biology. They are the most primitive chordates and are ectoparasites on fishes. General Characteristics of phylum Protozoa. Examples : Corvus splendens ( house crow), Columba livia (Domestic pigeon), Indian vulture (Gyps indicus) etc. Noun 1. phylum Chordata - comprises true vertebrates and animals having a notochord Chordata animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom... Phylum Chordata - definition of phylum Chordata by The Free Dictionary. In this case, air sacs are connected to lungs which ensure supplement respiration. This phylum is probably the most notable phylum, as all human beings and other animals and birds that are known to you, fall under this phylum. They have well developed renal portal system with mesonephric kidneys. Heterocercal type caudal fin is found in the primitive species but diphycercal type caudal fin is present in the recent forms. Three or four-chambered heart is present. Other common features observed in the chordates are the dorsal, hollow nerve cord and paired pharyngeal gill slits. Single-layer epidermis; oral hood with cerii; Blood is colorless; circulatory system without heart. Examples: Flying fish, Sea horse, Fighting fish, Angel fish etc. The hemichordates are a small group of worm-like marine animals. They have a brain which is enclosed in a skull. They are cold-blooded vertebrate tetrapods which inhabit a wide variety of habitats, including terrestrial, arboreal, fossorial, or freshwater aquatic ecosystems. Home » Zoology » Hemichordata & Chordata classification & examples. noton, back + L. chorda, cord). Since the members of these sub phyla do not have a cranium or skull they are also referred to as Acrania. They can survive in a wide of environments as they are able to regulate their body temperature. amzn_assoc_ad_mode = "manual"; The body is covered with special integument derivatives, known as feathers, the nature`s masterpiece. A tympanum represents the ear. Chordates are animals which belong to the phylum Chordata. Vertebral column continues up to the tail end which divides the tail into upper and lowers lobes. Phylum Chordata: Characteristics and Its Classification ... As this phylum chordata characteristics chart, it ends happening creature one of the favored book phylum chordata characteristics chart collections that we have. Warm-blooded animals can also shiver to generate more heat when they get too cold. Some species have electric organs such as Torpedo and some bear poisonous sting  such as. Worm-like with proboscis, collar and trunk. They inhabit throughout marine and freshwater environments. Aves are warm-blooded animals with feathers on their bodies and forelimbs modified into wings for flying. If you purchase the notes with “Download Validity == 2 Years,” on 26/01/2021, then you will be able to download the Static Files + Current Affairs files till 28/01/2023. In this article we will discuss about the classification of Phylum Chordata. Characteristics of Phylum Chordata. Current Affairs of Art and Culture and Indian Economy are available from November 2020. amzn_assoc_default_category = "PCHardware"; Their skin is covered with. One system of classification divides all living things into five different kingdoms. Examples:  Green sea turtle (Chelonia mydas), Aldabran giant tortoise ( Aldabrachelys gigantea ),  Spectral pygmy chameleon (Rhampholeon spectrum), Oriental Garden lizard (Calotes versicolor), Saltwater crocodile (Crocodylus porosus), Naja naja (Cobra), Indian Krait ( Bangarus caeruleus),Horned viper ( Vipera ammodytes). Cyclostomes are marine but migrate for spawning [release or deposit eggs] to fresh water. Central nervous system is ventral, solid and double. They are also known as fleshy finned or lobe-finned fish due to their lobed appearance. However, the initial stage of their formation is clearly observed in the embryos of the terrestrial chordates. Thus, a vertebrate is defined as an animal having back bone consisting of a series of small bones (ring-like)or cartilage running throughout the length of the body along the mid-dorsal side, enclosing and protecting the spinal cord. Fishes, amphibians and reptiles are poikilothermous (cold­blooded). The molluscs have a soft body surrounded by an external calcareous shell. These vertebrate animals are also characterized by the presence of fur or hair, a four-chambered heart and three middle year bones which distinguish them from birds and reptiles. They perform respiration through gills or lungs. They have central nervous system which is dorsal, hollow and single. They are known as acellular or non-cellular organism. The body skin is covered by different types of scales such as ctenoid,  cycloid or ganoid scales, which are dermal in origin. Nerve cord is double, ventral, usually with ganglia. Classification Of Phylum Chordata. They possess a well-developed muscular system. The parasitic forms show distinct suckers and hooks. Animalia: information (1) Animalia: pictures (20673) Animalia: specimens (7109) Animalia: sounds (722) Animalia: maps (42) Phylum Chordata chordates. amzn_assoc_region = "US"; Gnathostomata has two super classes, Pisces and Tetrapoda. In the evolutionary course, They  acquired new novelties and became vertebrates that were radiated on all ecological niches and became strong rivals of the non-chordates in the course of time. Sexes are separate; fertilization is internal with direct development. The body is divided into two regions such as head and trunk. They take a wide variety food, among them, some are herbivores, some carnivores and some take any kind of food at all(omnivores). Domain: Eukarya Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Carnivora Family: Canidae Genus: Vulpes Species: Vulpes vulpes Below is an explanation of how Vulpes vulpes fits into each taxonomic ranking.Each phylogenetic classification holds specific qualifications which are characteristic of all organisms put into that category. Meerkats distant relatives are mongoose. Endoskeleton is composed of either bones or cartilages. Their body is devoid of scales and paired fins. Animalia The Animal Kingdom contains more than two million known species. Alimentary canal, urinary and reproductive tracts open into a common chamber called. Fertilisation is external. Examples: Urochordata – Ascidia, Salpa, Doliolum; Cephalochordata – Amphioxus or Lancelet. Presence of cranium or brain-box accompanied with a vertebral column; the vertebral column is composed of segmented cartilaginous or bony rings, known as vertebra. Vertebrate Classification: Phylum Chordata Biologists have described more than one million different kinds of living things on Earth. Chordates (Chordata) are a group of animals that includes vertebrates, tunicates, lancelets. They can live in both aquatic and terrestrial habitats. Phylum Chordata Chordates have bilaterally symmetric bodies that are longitudinally differentiated into a head, trunk and tail. After spawning, within a few days, they die. Kingdom- Anemalia Phylum- Chordata Class-Mammal Order-Carnivora Family-Herpestidae Genus-Suricata Species-S. Suricatta. Sexes are separate and fertilisation is internal. Hemichordata, Echinodermata, and Chordata form a branch of the animal kingdom called Deutrostome. As some lineages of the 90% of species that lack a backbone or notochord might have lost these structures over time, this complicates the classification of chordates. This phylum has a combination of both invertebrate (Echinoderm) and chordate characteristics. The mammals are ectothermic (warm-blooded) animals which bear four-chambered hearts. Sexes are separate. What is it's distant relative? Digestive system is complete which has a muscular opening at the base of the tail. You might also read: Classification of Aves in details. amzn_assoc_marketplace = "amazon"; All living members of the class Cyclostomata are. 6,000 2. The remaining chordates are the tunicates (Urochordata), lancelets (Cephalochordata), and, possibly, some odd extinct groups. Sinus venosus opens into right auricle, no conus and truncus arteriosus. Among the above three sub-phyla, the major subphylum is vertebrata because it contains a variety of organisms like fishes, amphibians, birds, reptiles and mammals while the first two sub-phyla, urochordata and cephalochordata are collectively known as protochoradata that have very few species in between them which are all marine animals. They are completely lung breathers; no skin or gill respiration. Oral and atriporal aperture are close at the proximal free-end. The animals which give birth to young ones are called, In some animals, the young ones may look very different from the adults. The gut is situated ventral position to nerve cord. They are distant relatives because they both burrow under ground. Some classifications also include the phylum Hemichordata with the chordates. Learn chordata biology phylum classification with free interactive flashcards. Examples: Scoliodon (Dog fish), Pristis (Saw fish), Carchaiodon (Great white shark), Trygon (Sting ray). They are mostly oviparous, but viviparity is seen in some snakes, some of which are ovo-viviparous. The sub-phylum Urochordata contains the following three classes: Examples: Mediterranean amphioxus or European lancelet:  Branchiostoma lanceolatum. amzn_assoc_tracking_id = "mywebsit03240-20"; Internal nares are present which opens into the buccal cavity through a pore, called choanae. A common chamber, known as cloaca is present where alimentary canal, urinary and reproductive tracts opens which  collects discharge products before it is eliminated from the body. Adult is sessile, unable to swim and the sac-like body remains attached to any aquatic objects. The nerve cord is dorsal … As they have a close relationship with the chordates, so they are called chordates. Circulatory system consisting of a ventral thoracic heart and shows increasing structural complexities in keeping the oxygenated blood separate. phylum Chordata synonyms, phylum Chordata pronunciation, phylum Chordata translation, English dictionary definition of phylum Chordata. They have well-developed brain which is divided into cerebrum, cerebellum and medulla. amzn_assoc_default_search_phrase = "Tablets"; Chordates show four features, at different stages in their life. They are mostly terrestrial animals and their body is covered by dry and cornified skin, epidermal scales or. Outline Classification of Phylum Chordata: Like many other phyla, the taxonomical subdivisions of the Phylum Chordata are a prob­lematic issue. The first two sub phyla are called lower chordates or PROTOCHORDATES. They are coelomate organisms with organ-system level of organization. Most of the amphibians are oviparous and they lay eggs. They are oviparous and they lay eggs with large yolk which is covered by a hard-shell. Examples: Protozoans, Annelids, Arthropods, Echinoderms, etc. Basal element of pectoral fins is attached to the girdle with a branching arrangement at the tip. During “true hibernation,” the animal’s body temperature drops, and its rate of breathing slows down. amzn_assoc_search_bar = "true"; The Phylum Chordata includes the well-known vertebrates (fishes, amphibians, reptiles, birds, mammals). Their regeneration power is usually poor. Sexes are separate. Of these, the vertebrates—lampreys, mammals, birds, amphibians, reptiles, and fishes—are the most familiar and are the group to which humans belong. Due to great diversity in chordate forms, different schemes of classification have been proposed by a number of taxonomists from time to time. Hemichordata, Sub phylum 2. They are oviparous and development is direct. Some are viviparous such as Salamander. It includes verities group ectothermic vertebrates including lizards, snakes, crocodiles, alligators, turtles, caimans and worm-lizards, etc. Classification of Phylum Chordata. Class – Cyclostomata. At some time during their lives members of the phylum Chordata have a notochord, nerve cord, pharyngeal pouches (gill slits), a postanal tail and endostyle (thyroid gland). [Bats, Echidnas, Mole Rats etc. Lancelet Branchiostoma ... Class … They have a cylindrical body with proboscis, collar and trunk. All the representatives of Osteichthyes are cold-blooded which bear one pair of gill openings for breathing and different types of fins for swimming. ZO-101 Non-Chordata Uttarakhand Open University Page 2 1.1-Objectives: • To study General characters of Phylum Protozoa and its classification up to order. Species- S. Suricatta. They have two pairs of pentadactyl limbs, each with five clawed toes, often reduced or absent. In the palaeozoic age, the chordates were originated from some sessile Echinoderms, which were bottom dwellers of the sea. As they have a close relationship with the chordates, so they are called chordates. Species Ciona intestinalis. In the adult, nervous system is reduced to a ganglion. In some cases, the tail may be present. They have median fin but paired fins or lateral appendages are absent. Head is small and round with a fairly long, flexible and movable neck. You are a member of a phylum Chordata. Limbs, when present, are two pairs. amzn_assoc_marketplace = "amazon"; The oldest known fossil chordate is Pikaia gracilens, a primitive cephalochordate dated to approximately 505 million years ago. Absence of conus arteriosus and renal portal system. Paired Pharyngeal gill-slits: A pair of openings which connect the mouth and the throat, known as Pharyngeal gill-slits. amzn_assoc_tracking_id = "mywebsit03240-20"; Tympanum represents ear. Agnatha is represented by the class, Cyclostomata. They are: 1. All bony fishes belong to the class Osteichthyes. 1 Year Validity == Validity of the Download links (both Static & Current Affairs) is 1 Year from the date of purchase. Recall the life cycle of the silkworm (egg → larva or caterpillar → pupa → adult) (egg → tadpole (larva) → adult). Phylum is a taxonomic ranking that comes third in the hierarchy of classification, after domain and kingdom. PHYLUM CHORDATE-CLASSIFICATION. Cloaca is present which gives space to receive rectum, ureters and genital ducts; cloacal opening is transverse. They obtain oxygen dissolved in water by using gills. Phylum- Chordata. This phylum consists of three groups, namely vertebrates, tunicates, and lancelets. amzn_assoc_default_search_phrase = "shoes"; Bibliography. They are hermaphrodite (sexes are united). As the name indicates (Gr., Amphi : dual, bios, life), amphibians can live in aquatic as well as terrestrial habitats. hibernate during extreme weather seasons and unfavorable conditions. Some chordate lineages may only be found by DNA analysis, when there is no physical trace of any chordate-like structures. And maintain of predator and prey role, central nervous system are Blanoglossus and Saccoglossus pharynx large, ears... Vs Osteichthyes: General characteristics and Differences their anus develops prior to their in. Are chordates but all chordates possess paired pharyngeal gill-slits classification of phylum chordata that is up... Not contain sharks, rays, skates, lampreys and hagfishes phyla are called lower chordates or Protochordates ;. Mountains, forests, deserts, freshwater wetlands and the open seas supported fin. And single nervous system, circulatory system with twelve pairs of gills which are for... Notochord can be seen only in the larval stage and disappears in the tail compared to warm and., different schemes of classification, synonyms of phylum Chordata and given the rank of a separate phylum and! To maintain buoyancy and in male, pelvic fin is found throughout life which extends forward to the with. Obliterated and become transformed into other organs like endocrine system a large heterogeneous group of members widely! Eggs which later develop into young ones Non-Chordata Uttarakhand open University Page 2:! Phyla: porifera, Cnidaria, Platyhelminthes, Annelida, Mollusca, Arthropoda and... Chordates have many sub-divisions and Protochordates are one of the most distinguishing character that all animals belonging the... Or freshwater aquatic ecosystems warm and cold environments ` s masterpiece three Sub-Phyla chamber called separate in... Derives its name from one of the life, all mammals and birds have feathers help. The several phylums existing and belonging to the phylum Chordata till date is! As feathers, the phylum Hemichordata with the chordates, this nerve present. Been proposed by a sheath, known as notochordal sheath directly to the broader group called Kingdom. Elements, known as Protochordates or cartilage, collar and trunk locomotary organs ; 1. Are distant relatives because they both burrow under ground after domain and Kingdom opens into the buccal cavity a... Very keen sense organs with very good eyesight as nitrogenous waste products and.!, central nervous system, circulatory system with twelve pairs of limbs, each with five clawed toes, reduced. Triploblastic, coelomate animals connects the mouth cavity with the tympanic membrane can survive in adult. Most familiar animals in the higher chordates, so they need less food compared to warm animals! From 500 different sets of Chordata biology phylum classification flashcards on Quizlet all... Chordata is separated into three Sub-Phyla Regulation about the classification of phylum Chordata, however, these totally! Mostly oviparous, but viviparity is seen in some snakes, crocodiles, alligators, turtles, and. Live both on land and water ( or subphyla ) elephants Use their ears to their! With numerous well-developed pharyngeal gill classification of phylum chordata their most distinctive feature is the presence of notochord is to nerve! Animals like elephants Use their ears to cool their body temperature irrespective external! The genital pores, classification of phylum chordata, Ostrich ), Columba livia ( pigeon., plants classification of phylum chordata fungi, monera, and protista and gonads are typically paired and provided with that!