Data/hora: 13/06/2024 08:20:57

Provedor de dados: | 42
País: | Brazil
Título: | A new Mammutidae (Proboscidea, Mammalia) from the Late Miocene of Gansu Province, China
Autores: | MOTHÉ,DIMILA; AVILLA,LEONARDO S.; ZHAO,DESI; XIE,GUANGPU; SUN,BOYANG.
Data: | 2016-03-01
Ano: | 2016
Palavras-chave: | Evolution; Longirostrine symphysis; Mammutidae; Miocene; Proboscidea.
Resumo: | ABSTRACT The "Yanghecun specimen", a proboscidean specimen represented by a mandible from Miocene of China and previously described as Gomphotheriidae, is here reviewed and described as a new genus and species of Mammutidae: Sinomammut tobieni. This taxon is a longirostrine mastodon, lacking lower tusks, and bearing a wide last molar with oblique and non-inflated lophids, broad transverse interlophids, and yoke-like wear figures. Phylogenetic analysis of Mammutidae based on dental and mandibular features recovered S. tobieni as sister group of the mastodon Mammut. The longirostrine condition and the well-developed lower incisors seem to be primitive for Mammutidae, while the brevirostry is the derived condition, probably emerged during the middle Miocene (12-11 Mya). However, two derived conditions are recognized to the lower tusks: the absence of lower tusks (S. tobieni) and the occasional presence of vestigial lower tusks (Mammut).
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100065
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201520150261
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.88 n.1 2016
Fonte: | info:eu-repo/semantics/openAccess