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letra de thecodontosaurus antiquus (the epitome of dinosauria) - thecodontion

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bipedal herbivorous basal sauropodomorph
thriving during the rhaetian age of the triassic
socket-tooth lizard filling fissures
in the chalkstone quarries of clifton

robust morph in the population
indicating secondary species unlikely
s-xual dimorphism or autapomorphies
small size due to insular dwarfism

roots of its t–th not fused with the jaw bone
but positioned in separate receptacles
long basipterygoid process on the skull
medium-sized serrated leaf-shaped t–th

short dentary in relation to the lower jaw
ilium subquadrate instead of rounded
hands long, narrow, with extended claws
its tail much longer than neck and body

exact cladistic -n-lyses not decisive
placed in its own thecodontosauridae
ancestral to massospondylus
preceding the prosauropod-sauropod split

misassigned species as separate genera
carnivorous phytosaurians and agrosaurus
scelidosauridae, anchisauridae or synonyms
thecodontosaurus antiquus the valid species
one of the first saurian remains discovered
and one of the oldest that existed
once labeled a member of the squamata
now the very epitome of dinosauria

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