Propalaeoryx Stromer 1926 (Ruminantia, Pecora, Giraffomorpha) revisited: systematics and phylogeny of an African palaeomerycoid - Archive ouverte HAL
Article Dans Une Revue Communications of the Geological Survey of Namibia Année : 2018

Propalaeoryx Stromer 1926 (Ruminantia, Pecora, Giraffomorpha) revisited: systematics and phylogeny of an African palaeomerycoid

Résumé

We describe new mandibular and dental material of Propalaeoryx stromeri from Langental (early Miocene, Sperrgebiet, Namibia), and re-describe the cranial anatomy of this genus of African giraffomorphs. The occipital and nuchal anatomy of the two Propalaeoryx species are described and emended differential diagnoses are presented. Several cranial and postcranial characters are crucial for understanding the position of Propalaeoryx as a basal member of the Palaeomerycoidea within the Giraffomorpha. We define the clade Palaeomerycoidea as the least inclusive clade of giraffomorphs containing Triceromeryx and Propalaeoryx. Finally, the phylogenetic position of Propalaeoryx unveils a putative early African-Eurasian vicariance event among basal palaeomerycoids that probably took place around the Oligo-Miocene boundary, a time when other ruminant lineages were also splitting.
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Dates et versions

hal-04000931 , version 1 (22-02-2023)

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  • HAL Id : hal-04000931 , version 1

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Israel Sánchez, Jorge Morales, Juan López-Cantalapiedra, Martin Pickford, Victoria Quiralte. Propalaeoryx Stromer 1926 (Ruminantia, Pecora, Giraffomorpha) revisited: systematics and phylogeny of an African palaeomerycoid. Communications of the Geological Survey of Namibia, 2018, 19, pp.123-131. ⟨hal-04000931⟩
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