Author, as appears in the article.: Martinez-Navarro, Bienvenido; Pandolfi, Luca; Medin, Tsegai; Libsekal, Yosief; Ghinassi, Massimiliano; Papini, Mauro; Rook, Lorenzo;
Department: Història i Història de l'Art
URV's Author/s: Martínez Navarro, Bienvenido
Keywords: Systematics Stratigraphic context Skull Pliocene Pleistocene dandiero basin Ontogeny Mulhuli-amo buia Juvenile Geometric morphometrics Facies analysis Eritrea Danakil depression Buia Alat formation Afar depression
Abstract: An almost complete cranium of a juvenile individual from the late Early Pleistocene site of Buia, in the northern Afar (Danakil) Basin in Eritrea, reveals a different growth pattern of the extinct species Hippopotamus gorgops Dietrich, 1928 compared to the extant species Hippopotamus amphibius Linnaeus, 1758. The specimen shows important cranial features of Hip. gorgops (also visible in adult specimens), with a derived cranial anatomy that is related to the specialization to a more aquatic life style than other species of Hippopotamidae: elevated nuchal and sagittal crests, strongly elevated orbital cavities, short neurocranium and elongated palate. A geometric morphometrics analysis was performed in the lateral view on skulls of Hip. gorgops and Hip. amphibius, to investigate size-shape relationship and to compare ontogenetic growth trajectories between both taxa. The study revealed that, during growth (increase in size and age), variations in skull shape are prominent in Hip. amphibius; juvenile and adult individuals of Hip. gorgops display strong morphological similarities but size and shape are poorly correlated. The results support the hypothesis that in a relatively early ontogenetic stage, Hip. gorgops was more specialized in its aquatic adaptation than Hip. amphibius.
Thematic Areas: Paleontology Geociências Ciências biológicas i Biodiversidade
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: bienvenido.martinez@urv.cat
Record's date: 2024-07-27
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/21/7
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Comptes Rendus Palevol. 21 (7): 157-173
APA: Martinez-Navarro, Bienvenido; Pandolfi, Luca; Medin, Tsegai; Libsekal, Yosief; Ghinassi, Massimiliano; Papini, Mauro; Rook, Lorenzo; (2022). The ontogenetic pattern of Hippopotamus gorgops Dietrich, 1928 revealed by a juvenile cranium from the one-million-years-old paleoanthropological site of Buia (Eritrea). Comptes Rendus Palevol, 21(7), 157-173. DOI: 10.5852/cr-palevol2022v21a7
Article's DOI: 10.5852/cr-palevol2022v21a7
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV