AI Article Synopsis
- The study describes a newly identified large amphicyonid mandible (around 200 kg) found in marine deposits from Sallepisse, dating back to 12.8-12.0 million years ago.
- The unique features of its lower jaw (p4) lead to the establishment of a new genus and species that are distinct from other European amphicyonids of the same period.
- This discovery emphasizes the decline in ecological and morphological diversity of the Amphicyonidae family during significant Miocene events, such as the Middle Miocene Climatic Transition and the Vallesian Crisis.
Article Abstract
Serravallian terrestrial vertebrates are very uncommon in the northern margin of the Pyrenean Mountains. A mandible of a new large sized amphicyonid (ca. 200 kg) is here described from the marine deposits of Sallepisse (12.8-12.0 Mya). Despite that this new taxon is close in size to some European amphicyonids from the Miocene (e.g., , , and ), the unique morphology of its p4, unknown in this clade, allows the erection of the new genus nov. gen. & sp. This taxon may be derived from a -type amphicyonine. The description of this new taxon highlights the erosion of the ecological and morphological diversity of the Amphicyonidae in response to well-known Miocene events (i.e., Proboscidean Datum Event, Middle Miocene Climatic Transition, Vallesian Crisis).
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9206431 | PMC |
| http://dx.doi.org/10.7717/peerj.13457 | DOI Listing |
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