Dromomeron

Name: Dromomeron ‭(‬running femur‭)‬.
Phonetic: Dro-mo-meh-ron.
Named By: Randall B.‭ ‬Irmis,‭ ‬Sterling J.‭ ‬Nesbitt,‭ ‬Kevin Padian,‭ ‬Nathan D.‭ ‬Smith,‭ ‬Alan H.‭ ‬Turner,‭ ‬Daniel Woody‭ & ‬Alex Downs‭ ‬-‭ ‬2007.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauromorpha,‭ ‬Lagerpetidae.
Species: D.‭ ‬romeri‭ (‬type‭)‬,‭ ‬D.‭ ‬gregorii,‭ ‬D.‭ ‬gigas.
Diet: Carnivore/Insectivore.
Size: Up to‭ ‬1‭ ‬meter long.
Known locations: Argentina‭ ‬-‭ ‬Quebrada del Barro Formation.‭ ‬USA,‭ ‬Arizona‭ ‬-‭ ‬Chinle Formation,‭ ‬New Mexico‭ ‬-‭ ‬Chinle Formation,‭ ‬Petrified Forest Formation,‭ ‬Texas‭ ‬-‭ ‬Colorado City Formation.
Time period: Norian of the Triassic.
Fossil representation: Partial remains of a few individuals.

       Dromomeron is a genus of small dinosauromorph that lived in North America during the late Triassic.‭ ‬Since being first described in‭ ‬2007,‭ ‬the recovery and study of Dromomeron fossils in the south west of the USA has revealed an interesting discovery.‭ ‬Though only known from the partial remains of a few individuals,‭ ‬these fossils have been found in locations that also contain the fossil bones of early theropod dinosaurs,‭ ‬including the genera Tawa,‭ ‬Chindesaurus and Coelophysis.‭ ‬What this shows us is that the dinosauromorphs,‭ ‬which were the precursors to the true dinosaurs,‭ ‬did not disappear quickly,‭ ‬and for some time lived amongst the first dinosaurs.
       In‭ ‬2016,‭ ‬a new species of Dromomeron,‭ ‬D.‭ ‬gigas,‭ ‬was named from the Quebrada del Barro Formation of Argentina.‭ ‬This represents the first species and fossils of Dromomeron discovered outside of the North American continent.

Further reading
-‭ ‬A Late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs.‭ ‬Science‭ ‬317:358-361.‭ ‬-‭ ‬Randall B.‭ ‬Irmis,‭ ‬Sterling J.‭ ‬Nesbitt,‭ ‬Kevin Padian,‭ ‬Nathan D.‭ ‬Smith,‭ ‬Alan H.‭ ‬Turner,‭ ‬Daniel Woody‭ & ‬Alex Downs‭ ‬-‭ ‬2007.
-‭ ‬Supporting online material for A Late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs.‭ ‬-‭ ‬Science.‭ ‬-‭ ‬Randall B.‭ ‬Irmis,‭ ‬Sterling J.‭ ‬Nesbitt,‭ ‬Kevin Padian,‭ ‬Nathan D.‭ ‬Smith,‭ ‬Alan H.‭ ‬Turner,‭ ‬Daniel Woody‭ & ‬Alex Downs‭ ‬-‭ ‬2007.
-‭ ‬Hindlimb osteology and distribution of basal dinosauromorphs from the Late Triassic of North America.‭ ‬-‭ ‬Journal of Vertebrate Paleontology‭ ‬29‭(‬2‭)‬:498-516.‭ ‬-‭ ‬S.‭ ‬J.‭ ‬Nesbitt,‭ ‬R.‭ ‬B.‭ ‬Irmis,‭ ‬W.‭ ‬G.‭ ‬Parker,‭ ‬N.‭ ‬D.‭ ‬Smith,‭ ‬A.‭ ‬H.‭ ‬Turner‭ & ‬T.‭ ‬Rowe‭ ‬-‭ ‬2009.
-‭ ‬A Rebuttal to Nesbitt's and Hone's‭ "‬An external mandibular fenestra and other archosauriform characteristics in basal pterosaurs.‭ ‬-‭ ‬International Symposium on Pterosaurs:‭ ‬19‭–‬22.‭ ‬-‭ ‬C.‭ ‬S.‭ ‬Bennett‭ ‬-‭ ‬2013.
-‭ ‬A Norian lagerpetid dinosauromorph from the Quebrada del Barro Formation,‭ ‬northwestern Argentina.‭ ‬-‭ ‬Ameghiniana.‭ ‬-‭ ‬Ricardo N.‭ ‬Martínez,‭ ‬Cecilia Apaldetti,‭ ‬Gustavo A.‭ ‬Correa,‭ ‬Diego Abelín‭ ‬-‭ ‬2016.



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