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25 Cards in this Set
- Front
- Back
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Urochordata
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Tunicates
Similar to the ancestors of all chordate |
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Cephalochordata
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Maintain tadpole like body entire life
filter feeder |
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Vertebrata
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Vetebral column instead of nodal cord
Appendages Large brain covered by skull Well developed circulatory system Jawless fishes Jawed fishes tetrapods Amphibians reptiles Mammals |
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Jawless fishes
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first vertebrates
Ostracoderms :Hagfish/lime eels Lamprey: fish parasites |
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Jawed fishes
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Cartilage : skeleton is made out of cartilage Shark/chimaera/
Ray finned fish: has bones in the fins Lobe finned fish: long paddle with bones and muscles, gives rise to the first land animals Lungfishes: closest to land animals |
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Echinodermata
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Bilaterally symmetrical as larva
mature has pentaradial symmetry Has an internal skeleton Has tube feet(gas exchange locomotion and feeding) Crinoidea Echinoidea Asteroideacollapses Ophiuritdea Concentricycloidea Holothuroidea |
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Crinoidea:
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sea lilies
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Echinoidea
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sea urchins and sand dollars
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Asteroidea
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star fish (top predators) without them the diversity of the ecosystem collapses
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Ophiuritdea
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brittle star
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Concentricycloidea
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sea daisy (Star fish wit no arms)
Holothuroidea: sea cucumbers |
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Hemichordata
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half chordates
Wormlike creatures Have proboscis (head) collar(nerve cord) and trunk |
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chordate
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have notochordate, tail, ventral heart, dorsal(hollow nerve cord), pharyngeal slit
Urochordata Cephalochordata Vertebrata |
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Vertebrata
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Jawless fishes
Jawed fishes tetrapods Amphibians reptiles Mammals |
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chodates
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have notochordate, tail, ventral heart, dorsal(hollow nerve cord), pharyngeal slit
Urochordata Cephalochordata Vertebrata |
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Amphibians
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need to be by water for skin or reproduction
Gymnophona (caecilian) Anura (frog and toad) Urdodela (salamander) south Appalachians widest diversity |
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reptiles
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-Eggs can survive on land because of shell and amniotic fluid
Waterproof skin -live in much hotter dry climates compare to Amphibians Mijority of amniote( ancestors of mamals,birds, etc) -Some lizards give birth Tuatara Sguamata Testudines Crocodilian Birds Saurishia ornithischia Petrosaurs |
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Tuatara
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closest relative of lizzards
Only new-zeland almost extinct |
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Sguamata
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(lizzrds and snkes):
Vinome genes simple enzymes that break down proteins in large amounts There are legless lizards when environment is water or require borrowing Some snakes have rudimentary legs or one set of functioning legs |
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Testudines
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(Turtle): appear suddenly in the fossil record
Crocodilian: alligator have been taken off the endangered spices list |
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Birds
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related to ornithischia
have 5-6 mandibular bones(jaw) lay eggs have scales Flightlessnes evolved many times |
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Petrosaurs
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flying dinosaurs
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Mammals
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Also an amniote
Coexists with reptiles Have sweat glans Memory glands Hair Fewer teeth 4 chamber heart Single lower jawbone Prototheria Marsupialia |
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Marsupialia
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Theria
Possoms Tasmanian devil primates Old world New world Apes |
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Marsupialia
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Monotrema
Only has 3 spices |
