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EASC103 > ORNITHOPODS > Flashcards

ORNITHOPODS Flashcards

1
Q

how did these differ from other ornithiscians?

A

DID NOT HAVE BODY ARMOUR

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2
Q

characteristics of all ornithopods

A

3 digits on feet (flat)

DENTAL BATTERY
joints in skull (cranial kinesis)
offset premaxillary tooth row
close/reduced external mandibular fenestra

SLENDER ISCHIUM

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3
Q

Iguanodontian characteristics

A

advanced ornithopods

widened premaxillary, no teeth

long snouts

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4
Q

Iguanodon

A

quadraped stance (longer forelimbs)

conical thumb spikes (5 digits, thumb spiked, pinky slender, in between ended in hooves)

10M long

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5
Q

Hadrosaurid characteristics (5)

A

duck billed

long snouts, broad beaks

intricate dental batteries (side to side motion)

NO THUMBS

facultative biped

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6
Q

two clades of Hadrosaurid

A

Hadrosaurines

Lameosaurines

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7
Q

Hadrosaurines

A

no crest

eg Edmontosaurus

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8
Q

Lameosaurines (Lambeosaurs)

A

crested

convoluted tubes with crest on skull

modified nasal passages

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EASC103 (22 decks)

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