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38 Cards in this Set
- Front
- Back
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superclass Agnathans
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"Jawless fishes"
Lack bone and posses only one nostril |
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Ostracoderms
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"bone and skin" ancient vertebrate fishes encased in body armor
latteral line system & paired appendages |
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class Myxinoidea
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Includes hagfish
-feed off dead things -defensive slime -capable of knotting their bodies -no metamorphosis |
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class Pteromyzontida
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Includes lamprey
-all spawn in freshwater -have ammocoete and suspension feeder larva -parasitic adult -lack back bone but have notochord |
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superclass Gnathostomes
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have jaws
includes bony fish and sharks |
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class Placodermi
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"plate skin"
-paired pelvic and pectoral fins -claspers on males -encased in heavy body armor |
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class Chondrichthyes
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"cartilage fish"-Includes sharks and rays and chimeras
-placoid scales -little bone |
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Subclass Elasmobranchii
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-sharks and rays
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subclass Holocephali
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Chimeras (rat fish)
-upper jaw fused to brain case -scales absent -only 25 species -head clasper |
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class Osteichthyes
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"bony fish"
-small overlapping scales -swim bladder -ray fins |
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superorder Neopterygii
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includes gars
-most recent and mos advanced -circular scales -notochord replaced by ossified vertebrae -homocercal tail |
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Teleostei
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terminal bony fish
-20,000 species -over a wide variety of habitats |
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Subclass Sarcopterygii
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fleshy finned fish
-gave rise to the first terrestrial vertebrates -cosmoid scales |
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Superorder Dipnoi
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Lungfishes
-3 genera living in freshwater -swimbladder formed lung -AFRICAN LUNGFISH |
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Tetrapods
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-may be terrestrial, amphibious, aquatic, or flying
-have a chiridilum(a muscularlimb with well defined joints and digits) |
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Class Amphibia
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Subclass: Lissamphibia
Orders: gymnophonia (leggless) urodela (salamanders) salientia (frogs and toads) |
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Amniotes
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bear embryos which developed in extraembryonic membrane
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Class Reptilia
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KNOW subclass parareptilia (shell with carapace and plasteron)
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Infraclass Lepidosauria
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Includes modern snakes, lizards, Sphenodon, and their ancestors
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Class Aves
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Birds
derived from diapsids and are most closely related to crocodiles |
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subclass Synapsida
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includes orders plycosauria (sail back reptiles) and therapsida (mammal like reptiles)
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Class Mammalia
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two major characteristics
1. Hair 2. mammary glands (teeth are important in classification since these two do not fossilize well) |
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Infraclass monotremata
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monotremes- or egg laying mammals
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infraclass metatheria
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order marsupialia- pouched mammals
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infraclass eutheria
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placentals
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Order edentata
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anteaters, sloths
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order insectivora
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shrews, moles
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Order Macroscelidea
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elephant shrews (in more than one order)
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order Scandentia
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tree shrews
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Order chiroptera
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bats (KNOW)
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Order dermoptera
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colugos (flying/gliding) lemurs
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order pholidota
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pangolins (scaled critter)
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order lagomorpha
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pika, rabbits
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order rodentia
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chipmunks, beaver
-incisors that grow entire life |
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order primates
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monkeys, humans, lemurs
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order carnivora
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cats, dogs, wolves, bears, skunks, walrus
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Ungulates
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Order artiodactyla- even toed
pigs camels cattle dear order perissodactyla odd toed horses tapirs rhinos |
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Hydracoidea- hyraxes
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order cetacea- whales, dolphins
order sirenia- sea cow order tubulidentata- ardvarks |
