Suidae remains recovered from the late Pliocene site of Collepardo (Latium, central Italy) are described and assigned to Sus arvernensis, a small-sized Ruscinian to Early Villafranchian (MN14-MN16a) species. In Italy, S. arvernensis only occurs in the Triversa Faunal Unit (MN16a), supporting the recently revised chronology of Collepardo. CT-scan methods are used to virtually extract and analyse a newly discovered neurocranium, providing the content for the first inner cranial description carried out on an extinct Suidae. Our analysis reveals that S. arvernensis has an anteroposteriorly elongated and dorsoventrally flat cerebrum, similar to that of the Asian Babyrousa babyrussa and the African Hylochoerus meinertzhageni. These species substantially differ in size and are representatives of two widely diverging phylogenetic clades, excluding relatively simple evolutionary or allometric explanations for brain morphology in Suidae.

Neurocranial anatomy of Sus arvernensis (Suidae, Mammalia) from Collepardo (Early Villafranchian; central Italy): taxonomic and biochronological implications / A. Iannucci, L. Bellucci, J. Conti, I. Mazzini, B. Mecozzi, R. Sardella, D.A. Iurino. - In: HISTORICAL BIOLOGY. - ISSN 0891-2963. - 34:1(2021), pp. 108-120. [10.1080/08912963.2021.1902999]

Neurocranial anatomy of Sus arvernensis (Suidae, Mammalia) from Collepardo (Early Villafranchian; central Italy): taxonomic and biochronological implications

D.A. Iurino
Ultimo
Writing – Original Draft Preparation
2021

Abstract

Suidae remains recovered from the late Pliocene site of Collepardo (Latium, central Italy) are described and assigned to Sus arvernensis, a small-sized Ruscinian to Early Villafranchian (MN14-MN16a) species. In Italy, S. arvernensis only occurs in the Triversa Faunal Unit (MN16a), supporting the recently revised chronology of Collepardo. CT-scan methods are used to virtually extract and analyse a newly discovered neurocranium, providing the content for the first inner cranial description carried out on an extinct Suidae. Our analysis reveals that S. arvernensis has an anteroposteriorly elongated and dorsoventrally flat cerebrum, similar to that of the Asian Babyrousa babyrussa and the African Hylochoerus meinertzhageni. These species substantially differ in size and are representatives of two widely diverging phylogenetic clades, excluding relatively simple evolutionary or allometric explanations for brain morphology in Suidae.
CT-scanning; endocast; palaeoneurology; paranasal sinuses; Pliocene; Ruscinian
Settore GEO/01 - Paleontologia e Paleoecologia
2021
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/959860
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