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The ontogenetic pattern of Hippopotamus gorgops Dietrich, 1928 revealed by a juvenile cranium from the one-million-years-old paleoanthropological site of Buia (Eritrea)

  • Dades identificatives

    Identificador: imarina:9246826
    Autors:
    Martinez-Navarro, BienvenidoPandolfi, LucaMedin, TsegaiLibsekal, YosiefGhinassi, MassimilianoPapini, MauroRook, Lorenzo
    Resum:
    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.
  • Altres:

    Autor segons l'article: Martinez-Navarro, Bienvenido; Pandolfi, Luca; Medin, Tsegai; Libsekal, Yosief; Ghinassi, Massimiliano; Papini, Mauro; Rook, Lorenzo;
    Departament: Història i Història de l'Art
    Autor/s de la URV: Martínez Navarro, Bienvenido
    Paraules clau: 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
    Resum: 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.
    Àrees temàtiques: Paleontology Geociências Ciências biológicas i Biodiversidade
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: bienvenido.martinez@urv.cat
    Data d'alta del registre: 2024-07-27
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/21/7
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Comptes Rendus Palevol. 21 (7): 157-173
    Referència de l'ítem segons les normes 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
    DOI de l'article: 10.5852/cr-palevol2022v21a7
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2022
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Paleontology
    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
    Paleontology
    Geociências
    Ciências biológicas i
    Biodiversidade
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