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Lecture 18

GLY 1842 Lecture 18: oct 21 notes
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by OneClass1113714 , Fall 2016
2 Pages
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Department
Geology
Course Code
GLY-1842
Professor
Andrew Heckert
Lecture
18

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==oct 21
NEXT WEEK
nova on building na
watch all the unit 4 links
sexual dimorphism
- argued about in dinosaurs
- problem : sample size
- birds have strong dimorphism
- crocodilians weak dimorphism
- ^ so its probable but not super provable
Aetosaurs
- primitive terrestrial herbivorous?
- only lived in late triassic
- app crew collected a cask
- hobby animal
- art department making a gorgertosuchus (2015) thingy
rauisuchians / crocodylomorphs
- upright carnivorous terrrestrial
- only lived in late triassic time
- postosuchus is most famous
- “big” 4+ m long
- big bad predator of the time
Pterosaurs
- flying reptiles
- TR - K
- dino bird line archosaurs
- not dinosaurs. not birds.
- but are bird lineeeeeee (more primitive than earliest dinosaur)
- 1st flying vertebrae
- 123 digits little, 4 digit is very extended
- pretty small animal at first, over time got huge
Lagosuchus
not quite a dinosaur, slightly more primitive than earliest
dinosaur
Silesaurs
close but still not a dinosaur
the hypothetical ancestor
4-5digits (iv & v smaller)
bipedal w/ long hind limbs
tibia fibula length greater than femur
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find more resources at oneclass.com ==oct 21 NEXT WEEK nova on building na watch all the unit 4 links sexual dimorphism - argued about in dinosaurs - problem : sample size - birds have strong dimorphism - crocodilians weak dimorphism - ^ so its probable but not super provable Aetosaurs - primitive terrestrial herbivorous? - only lived in late triassic - app crew collected a cask - hobby animal - art department making a gorgertosuchus (2015) thingy rauisuchians / crocodylomorphs - upright carnivorous terrrestrial - only lived in late triassic time - postosuchus is most famous - “big” 4+ m long - big bad predator of the time Pterosaurs - flying reptiles - TR - K - dino bird line— archosaurs - not dinosaurs. not birds. - but are bird lineeeeeee (more primitive than earliest dinosaur) - 1st flying vertebrae - 123 digits little, 4 digit is very extended - pretty small animal at first, over time got huge Lagosuchus not quite a dinosaur, slightly more primitive than earliest dinosaur Silesaurs close but still not a dinosaur the hypothetical ancestor 4-5digits (iv & v smaller) biped
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