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26 Cards in this Set
- Front
- Back
in diaspid radiation during the triassic and forward who belongs here
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in diaspid radiation during the triassic and forward who belongs here
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in diaspid radiation during the triassic and forward who belongs here
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On the branch to Archosauria who belongs here
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On the branch to Archosauria who belongs here
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On the branch to Archosauria who belongs here
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On the branch to Archosauria who belongs here
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what is this and when did it live
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Triolophosaurus (an Archosauromorph)
mid to late triassic |
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what is this an when is it from
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Rhynchosaur (Archosauromorphs) primarally herbevores
late triassic |
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what is this
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prolacertiform (Archosauromorphs)
very likely aquatic predator |
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what are the 4 major Archosaur traits
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1. Antorbital fenestra
2. Ossified lateral Shenoid ( a midline structure in front of the braincase) 3. Lateral Mandibula Fenestra 4. Flattened teeth |
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who is this
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Proterosuchid
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this is erythrosuchid, what were its charactors
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1. 3 pronged pelvis
2. 4th trocanter on femer (a knob like muscle attachment on the femur) 3. Antorbital fossa (fossa are depressions not holes) 4. Metatarsal 3 longer than 4 |
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This is Euparkenia
what are its charactors |
1. Loss of parietal foramen
2. sigmoid femer 3. development of osteoderms |
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in Avesuchia (bird crocs) what specific charactors are present
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1. lose of palatal teeth
2. calcaneal tuber oriented at greater than 45 degrees 3. continuous articular surface on fibula and distal tarsal 4 on calcanium |
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what does crurotarsi mean
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name derived from the Latin words crus and tarsus; it refers to the specialized articulation between crus and tarsus—specifically between fibula and calcaneum—present in the skeletons of suchians and phytosaurs, with a hemicylindrical condyle on the calcaneum articulating against fibula
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what are the charactors of the crurotarsi
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1. croc-ankle --> rotating between the astragalas and calcaneium
2. notch on scapulocorracoid 3. short stout cervical ribs |
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what is this crurotarsal archosaur
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phytosour --> semi aquatic predators in the triassic
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what is this crurotarsal archosaur
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Ornithosuchids --> terrestrial predator
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what is this crurotarsal archosaur
what is special about it |
stagonolepidae
it is the first archosuar herbovor |
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what is this crurotarsal archosaur
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Rauisuchia - giant predators
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what group does the origin of the crocodilians lie with
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the crocodylomorphia such as this saltoposuchid saltoposuchus
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the avemetatarsalia include the
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ornithodira + scleromochlus
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the ornithodria are composed of
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Pterosaur + dinosaur
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charactors of avemetatarsa
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1. No osteoderms
2. tibia longer than femer 3. metatarsals are opressed 4. ratio of forelimb to hindlimb greater than 0.55 meaning they are bipedal 5. second-forth metatarsals are longer than tibia -->primarally digitigrade 6. pubis is greater than ischium |
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what group is sister to dinosauria
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marasuchus
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