AM Forasiepi

BD Patterson

C Argot

C Illiger

CD West

DB Koyabu

DE Wilson

F Ameghino

F Meng

FA Smith

FJ Goin

FS Szalay

GM Martin

GT MacIntyre

GW Rougier

I Horovitz

I Ruf

JA Salton

JD Archibald

JR Wible

L Alloing-Séguier

LG Marshall

M Nakatsukasa

MA Abello

MA Nilsson

MD Ercoli

MD Malinzak

ML Baker

MR Sánchez-Villagra

O Schaller

P Hershkovitz

PH Dederer

R Ojala-Barbour

RJ Asher

RMD Beck

RS Voss

RW Meredith

S Ladevèze

T Schmelzle

TM Bown

W Graf

W Segall

WP Luckett

English

During the Cenozoic paucituberculatans were much more diverse taxonomically and ecomorphologically than the three extant genera of shrew-like marsupials. Among paucituberculatans, palaeothentids were abundant during the Early Miocene, although most of the fossil remains consist of isolated teeth or fragmentary jaws. We describe a new and exceptional partial skeleton of Palaeothentes lemoinei (Palaeothentidae), collected from the Santa Cruz Formation (Santacrucian age, Early Miocene) in Patagonia. Whereas the skull of P. lemoinei has more plesiomorphic traits in the face, palate, and cranial vault than that of living paucituberculatans, the dental morphology is more derived. The osseous inner ear was examined using micro-CT scanning, revealing a cochlea with 1.9 turns, the presence of a “second crus commune”, an anterior semicircular canal (SC) projecting slightly dorsally from the dorsal-most point of the posterior SC, and lateral and posterior SCs projecting laterally to the same level. On the basis of postcranial anatomy, previous studies have demonstrated that P. lemoinei was an agile cursorial form, an inference supported by study of the new postcranial elements

Forasiepi,Analia

Sánchez Villagra,Marcelo

Schmelzle,Thomas

Ladevèze,Sandrine

Kay,Richard

ARPHA Preprints

An exceptionally well-preserved skeleton of Palaeothentes from the Early Miocene of Patagonia, Argentina: new insights into the anatomy of extinct paucituberculatan marsupials

Forasiepi, Analia M

Sánchez-Villagra, Marcelo R

Schmelzle, Thomas

Ladevèze, Sandrine

Kay, Richard F

ZORA

During the Cenozoic paucituberculatans were much more diverse taxonomically and ecomorphologically than the three extant genera of shrew-like marsupials. Among paucituberculatans, palaeothentids were abundant during the Early Miocene, although most of the fossil remains consist of isolated teeth or fragmentary jaws. We describe a new and exceptional partial skeleton of Palaeothentes lemoinei (Palaeothentidae), collected from the Santa Cruz Formation (Santacrucian age, Early Miocene) in Patagonia. Whereas the skull of P. lemoinei has more plesiomorphic traits in the face, palate, and cranial vault than that of living paucituberculatans, the dental morphology is more derived. The osseous inner ear was examined using micro-CT scanning, revealing a cochlea with 1.9 turns, the presence of a “second crus commune”, an anterior semicircular canal (SC) projecting slightly dorsally from the dorsal-most point of the posterior SC, and lateral and posterior SCs projecting laterally to the same level. On the basis of postcranial anatomy, previous studies have demonstrated that P. lemoinei was an agile cursorial form, an inference supported by study of the new postcranial elements.Fil: Forasiepi, Analia Marta. Universitat Zurich; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Sánchez Villagra, Marcelo R.. Universitat Zurich; SuizaFil: Schmelzle, Thomas. Bad Wimpfen; AlemaniaFil: Ladeveze, Sandrine. Museum National d'Histoire Naturelle; Francia. Centre National de la Recherche Scientifique; Francia. Universite Pierre et Marie Curie; FranciaFil: Kay, Richard F.. University of Duke; Estados Unido

Forasiepi, Analia Marta

Sánchez Villagra, Marcelo R.

Ladeveze, Sandrine

Kay, Richard F.

CONICET Digital

Swiss Journal of Palaeontology

ARPHA OAI-PMH Endpoint

LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas

An exceptionally well-preserved skeleton of Palaeothentes from the Early Miocene of Patagonia, Argentina: new insights into the anatomy of extinct paucituberculatan marsupials

Abstract

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ARPHA Preprints

ZORA

CONICET Digital

ARPHA OAI-PMH Endpoint

LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas

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