Title of article :
The first record of a neonatal ornithopod dinosaur from Gondwana
Author/Authors :
Egerton، نويسنده , , Victoria M. and Novas، نويسنده , , Fernando E. and Dodson، نويسنده , , Peter and Lacovara، نويسنده , , Kenneth، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
Pages :
4
From page :
268
To page :
271
Abstract :
Discrete post-embryonic teeth and bone fragments have been recovered from the matrix with the holotype skeleton (MPM‐10001) of the ornithopod dinosaur, Talenkauen santacrucensis Novas et al., 2004 (Upper Cretaceous, Argentina). The minute tooth crowns are 1 mm apicobasally tall and 1.7 mm mesodistally wide. The crowns are symmetrical and have a centrally located primary ridge on the lingual surface. Secondary ridges lead to five marginal denticles on both teeth. The tooth morphology is consistent with dentary teeth in euiguanodontids. There is no evidence of transport, suggesting that the material is autochthonous with respect to the adult body block of T. santacrucensis (MPM‐10001). Steeply inclined wear facets on the lingual surface and associated microstriae support the conclusion that the minute teeth were from a post-embryonic euiguanodontid dinosaur rather than early stage replacement teeth. The morphology, size, and wear of the teeth and small bone fragments found in the body block of MPM‐10001 suggest that this material belongs to a neonatal T. santacrucensis. This is the first record of neonatal ornithopod remains from Gondwana.
Keywords :
Ornithopod , Cretaceous , Cerro Fortaleza , Neonatal , Santa Cruz Province
Journal title :
Gondwana Research
Serial Year :
2013
Journal title :
Gondwana Research
Record number :
2364400
Link To Document :
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