کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4748086 1360079 2014 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Systematic revision of Antepithecus brachystephanus Ameghino, 1901, and dental eruption sequence in Eocene “notopithecines” (Notoungulata) from Patagonia
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
Systematic revision of Antepithecus brachystephanus Ameghino, 1901, and dental eruption sequence in Eocene “notopithecines” (Notoungulata) from Patagonia
چکیده انگلیسی

In this contribution, a detailed systematic study of all species previously placed into the genus Antepithecus, a Barrancan (middle Eocene) “notopithecine” from Patagonia, is performed. In addition, other species described by Ameghino were studied and are also included in this taxon. The comparative morphological description allows corroborating and introducing new synonyms, and recognizing one valid species, Antepithecus brachystephanus. Its diagnosis is expanded and the number of specimens referred to this species is significantly increased. Morphological ontogenetic variations in dentition are recognized and compared with other “notopithecines”. A particular eruption sequence of permanent premolars is ascertained for the Patagonian taxa Notopithecus, Antepithecus, and Transpithecus. These three Casamayoran “notopithecines” have their upper and lower milk molars replaced by permanent premolars in a posterior-anterior direction, P/p4, P/p3, P/p2, contrasting with other notoungulates, including the Mustersan “notopithecine” Guilielmoscottia. This peculiar eruption sequence in Casamayoran “notopithecines” and its heterogeneity within the group could reflect a relevant phylogenetic character to clarify inter-specific relationships.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geobios - Volume 47, Issue 3, May–June 2014, Pages 165–181
نویسندگان
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