Week 11 Flashcards

1
Q

Anapsids

A

no fenestrae like turtles

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2
Q

synapsids

A

one fenestrae (lateral) all mammals and reptiles

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3
Q

diapsids

A

two fenestrae
two supgroups
-lepidosauromorphs (regular)
-Archosauromorphs (antorbital and mandibular fenestra

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4
Q

Dimetrodon

A

(permian) was the first synapsid
had three lineages
-Gorgonopsids (saber toothed)
-Dicynnodonts (tusked herbivores)
-Cyanodonts (became mammals)

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5
Q

archosauromorphs

A

are diapsids with antorbital and mandibular fenestae
-crocodiles, birds, Dinos and pterosaurs

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6
Q

avemetatarsalians

A

are archosaurs that have hinge like ankles
-stiffer to support lots of weight in upright stance
-dinosaurs, birds, pterosaurs

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7
Q

pseudosuchian

A

are archosaurs that have a peg and socket like ankle joint
-crocodiles

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8
Q

Permian extinction

A

killed lots via heat or something
-but left many niches open so synapsids took top status with Cynodonts and dicynodonts (surviving)
-but then diapsid archosaurs rose and took over an ancestor of crocodilian pseudosuchians

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9
Q

Pseudosuchian

A

large group coming from diapsid archosaurs after the permian extinction
phytosaurs,aetosaurs, rauischids, prestoschians, poposuroids

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10
Q

phytosaurs

A

Pseudosuchian
-similar to crocodiles
contains Smilosuchus

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11
Q

Aetosaurs

A

Pseudosuchian, armoured and herbivorous
contains, desmatosuchus

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12
Q

Rauisuchids

A

Pseudosuchian, terrestrial with upright posture

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13
Q

Prestoschians

A

Pseudosuchian, terrestrial with upright posture

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14
Q

Poposuroids

A

has the sail on back
-Poposaurus

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15
Q

Silesaurids

A

very early from the archosaurs
-small and bipedal with no hole in hip

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16
Q

Eoraptor

A

old fossil from Argentina
-carnavore saurischian

17
Q

Eodromaeus

A

old fossil from Argentina
-canivore saurischian

18
Q

Herrerasaurus

A

old fossil from Argentina
-large (tiger size), carnivore saurischian

19
Q

Panphagia

A

old fossil from Argentina
-carnivore saurischian

20
Q

Pisanosaurs

A

old fossil from Argentina
-herbivore ornithischian