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Modifications on fossils of neoepiblemids and other South American rodents
- Source :
- Lethaia. 50:149-161
- Publication Year :
- 2017
- Publisher :
- Scandinavian University Press / Universitetsforlaget AS, 2017.
-
Abstract
- Modifications on the cheek teeth and dentary bone (loss of dental tissues on the extra-alveolar portion of the cheek teeth, and corrosion on the surface of the dentary bone) of fossil specimens of medium to giant South American rodents (mainly neoepiblemids) from the Neogene (Brazil and Argentina) are documented here. These features are similar to those observed in teeth and bones of small hypsodont rodents (recent and Quaternary fossils) that were subjected to digestive process by predators/scavengers. Based on comparisons, we tentatively hypothesize that acid-etching resulting from digestive processes could have caused the modifications in the specimens, providing evidence of a palaeoecological interaction between neoepiblemids (and other rodents), and predators or scavengers.
- Subjects :
- 0106 biological sciences
010506 paleontology
Ecology
Paleontology
Zoology
Biology
Neogene
010603 evolutionary biology
01 natural sciences
stomatognathic diseases
stomatognathic system
Cheek teeth
South american
Hypsodont
Ecology, Evolution, Behavior and Systematics
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 15023931 and 00241164
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- Lethaia
- Accession number :
- edsair.doi...........6520d319c0117dfe8ed6d50e98aceed4