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72 Cards in this Set

  • Front
  • Back
Three subphyla of Chordata
Urochordata
Cephalochordata
Craniate
List the set of derived characteristics that all chordates have
Notochord
Pharynx gill slits
Muscular post anal tail
Dorsal hollow nerve cord
Longitudinal flexible rod located between the digestive tube and the nerve cord
Notochord
The dorsal hollow nerve cord is
the nerve cord that develops from from a plate of the ectoderm that rolls into a tube dorsal to the notochord
Function as suspension feeding structures in many invertebrate chorodates
Pharyngeal slits or clefts
The pharyngeal slits or clefts develop into
parts of the ear, head, and neck in terrestrial vertebrates
provides the much of the propelling force in many aquatic species
lost in embryotic development
Muscular post anal tail
Urochordata includes
Tunicates
_____ most resemble chordates during thier larva stage
Urochordata
Tunicates are ______ feeders
suspension feeders
Cephalochordata includes
Lancets
Lancets are
marine suspension feeders
Craniates are defined as
Chordates that have a head
The development of a ____ gave rise to a completely different way of feeding in chordates called _____
head
active preditiation
A ___________ a collection that appears near the dorsal margins of the closing neural tube in an embryo
Neural crest
Neural crest cell gave rise to these structures
Bones and cartilage of the skull
Hagfish belong to the class ____ in the phylum ____
Myxini
Craniate
Verteabrates are defined as
Craniates with backbones
Small (40mm) vertebrates from the cambrian have dentine
Conodonts
Jawless fish with gills for for respiration
bodies are armored plates
Ostraoderms
Lampreys blong in the class
Cephalaspidmorphi
Lampreys, hagfish, and ostraoderms are _____
Agnathostomes
Gnathostomes are
fish with jaws
_____ give jaws shape
Pharyngal slits
1st arch of the pharyngal slits became
mandible and quatrate
2nd arch in pharyngeal slits became
hyoid
Derived characters of gnathostomes
Enhanced sensory systems
a mineralized endoskeleton
Paired apendages
Earliest Gnathostomes are an extinct lineage of armored vertebras called ____
placoderms
Acanthodians share a common ancestor with _____-
osteichyes
Chondrichthyes are
sharks and rays and relatives
Condrichthyes are defined by their
cartilaginous skeletons
Two lineages of Chonrichthyes
Sharks and Rays
Ratfishes
The sensory organ of a shark
Ampulae of Lorenzini
Oviparous
lay eggs
Ovoviviparous
Eggs remain internal
Young recieve nutrition from mother
vivparous
Reproductive organs in sharks
clasper and collegian
Majority of vertebras belong to the clade of gnathostomes called
osterichthyes
Ray fish and Lobe fish belong to the clade
Osherichthyes
Ray-finned fish belong to the class
Achtinopterygii
Lobe finned fish belong to the class
Sarcoptergii
Sarcoptergii also includes
Tetrapods
Derived characteristics of Tetrapods
Four limbs with feet that have digits
Ears for detecting airborn sound
Gas exchange in amphibians come through thier
moist skin
Amphibians are dependent on _____ for _____
standing water for reproduction
3 orders of Amphibians
Urodela
Anura
Apoda
urodela is a order of
newts and salamanders
Anura includes
frogs and toads
Apoda includes
caecilains which are legless and resemble worms
___ group of tetrapods that are have completely adapted to terrestrial life
amniotes
Amniotes include
reptiles and mammals
Parts of the amniotes egg
shell
allantois
chorion
yolk
albumen
embryo
Terestrail adaptations of aminotes
impermeable skin and the ability to use the rib cage to ventilate the lungs
ectothermic
•Absorbing external heat as the
main source of body heat
endothermic
•Capable of keeping the body warm
through metabolism
First major group of reptiles to emerge
parareptiles
turtles upper shell
carapace
turtles lower shell
plastron
Two main lineages of parareptiles
lepidosaurs and the archosaurs
Representative of lepidsaurs
tuatara
The other major living lineage of lepidosaura are the
squatamata
legless lepidosaurs
snakes
•Belong to an archosaur lineage that dates back to the
late Triassic
crocodilians
Archosaur are
dinosaurs
Birds are
Archosaurs
Many of the characters of birds are adaptations that facilitate flight like..
hollow bones
 breast
muscle
clavicle
(wish bone)


  sac
lungs
A bird’s most obvious
adaptations for flight are its
wings and feathers
front of bird wings
shaft
back of birds wings
vane
Paleognathae's are known as
flightless birds
Neognathae are known as
birds with the ability to fly
T-rexes are in the class.... are known for being bipedial
Threopoda