INVESTIGADORES
PUJOS FranÇois Roger Francis
artículos
Título:
Functional anatomy of the forelimb of Plesiotypotherium achirense (Mammalia, Notoungulata, Mesotheriidae) and evolutionary insights at the family level
Autor/es:
FERNÁNDEZ-MONESCILLO, M.; MAMANI QUISPE, B.; PUJOS, F.; ANTOINE, P.-O.
Revista:
JOURNAL OF MAMMALIAN EVOLUTION
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2018 vol. 25 p. 197 - 211
ISSN:
1064-7554
Resumen:
In the present work, we provide muscular reconstruction and we infer functional properties of the forelimb of Plesiotypotherium achirense, a fossil mesotheriidnotoungulate from the late Miocene of Achiri (Bolivia). This locality has yielded the widest sample ever available for the forelimb of a mesotheriid. In addition, we propose a qualitative comparison of the forelimb (osteology and myology) at the family level, including the Miocene?Pleistocene mesotheriines Mesotherium cristatum, Plesiotypotherium achirense, Caraguatypotherium munozi, Plesiotypotherium casirense, and Pseudotypotherium sp, and the late Oligocenetrachytheriine Trachytherus alloxus. Functional properties are consistent with a digging ability and a Bscratch-digger lifestyle for Mesotheriidae. In general, there are only slight differences among the comparison sample, except forMesotherium cristatum, which reflect significant osteological modifications, likely to help increasing the moment arm while scratch-digging. These features are mainly observable on scapulae (distal border caudally displaced) and humeri(deltoid crest distally oriented and crista supracondylaris lateralis laterally projected).