Artículo
Colobops: A juvenile rhynchocephalian reptile (Lepidosauromorpha), not a diminutive archosauromorph with an unusually strong bite
Scheyer, Torsten M.; Spiekman, Stephan N. F.; Sues, Hans Dieter; Ezcurra, Martin Daniel
; Butler, Richard J.; Jones, Marc E. H.
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
03/2020
Editorial:
Royal Society of Chemistry
Revista:
Royal Society Open Science
ISSN:
2054-5703
e-ISSN:
2054-5703
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Correctly identifying taxa at the root of major clades or the oldest clade-representatives is critical for meaningful interpretations of evolution. A small, partially crushed skull from the Late Triassic (Norian) of Connecticut, USA, originally described as an indeterminate rhynchocephalian saurian, was recently named Colobops noviportensis and reinterpreted as sister to all remaining Rhynchosauria, one of the earliest and globally distributed groups of herbivorous reptiles. It was also interpreted as having an exceptionally reinforced snout and powerful bite based on an especially large supratemporal fenestra. Here, after a re-analysis of the original scan data, we show that the skull was strongly dorsoventrally compressed post-mortem, with most bones out of life position. The cranial anatomy is consistent with that of other rhynchocephalian lepidosauromorphs, not rhynchosaurs. The 'reinforced snout' region and the 'exceptionally enlarged temporal region' are preservational artefacts and not exceptional among clevosaurid rhynchocephalians. Colobops is thus not a key taxon for understanding diapsid feeding apparatus evolution.
Palabras clave:
COLOBOPS NOVIPORTENSIS
,
DIAPSIDA
,
FEEDING APPARATUS
,
RHYNCHOCEPHALIA
,
TRIASSIC
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(MACNBR)
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Citación
Scheyer, Torsten M.; Spiekman, Stephan N. F.; Sues, Hans Dieter; Ezcurra, Martin Daniel; Butler, Richard J.; et al.; Colobops: A juvenile rhynchocephalian reptile (Lepidosauromorpha), not a diminutive archosauromorph with an unusually strong bite; Royal Society of Chemistry; Royal Society Open Science; 7; 3; 3-2020; 1-14
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