Journal
CRETACEOUS RESEARCH
Volume 127, Issue -, Pages -Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cretres.2021.104947
Keywords
Gondwanatheria; Magallanodon; Late Cretaceous; Chorrillo Formation; Santa Cruz; Argentina
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Funding
- National Museum of Nature and Science, Japan
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This study describes gondwanatherian mammaliaforms from the Chorrillo Formation in Patagonia, Argentina, expanding our knowledge of this species.
The fossil record of gondwanatherian mammaliaforms from Patagonia is represented by several species known on the basis of isolated teeth, with the single exception of a partial dentary with two molariforms of the Paleocene species Sudamerica ameghinoi. The aim of the present contribution is to describe both a fragmentary dentary (with the base of the lower incisive) and a partial upper incisor coming from the Campanian-Maastrichtian Chorrillo Formation, at the La Anita Farm, SW Santa Cruz province, Argentina. The specimens are referred to Magallanodon baikashkenke, a species previously known by isolated teeth from the Dorotea (Chile) and Chorrillo (Argentina) beds. The present discovery expands our knowledge of this mammaliaform clade. (c) 2021 Elsevier Ltd. All rights reserved.
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