Search results for "Ruminantia"
showing 4 items of 4 documents
First occurrence of Sivatherium Falconer and Cautley, 1836 (Mammalia, Ruminantia, Giraffidae) in the Iberian Peninsula
2021
he sivatherine clade includes some of the largest giraffids and emerged during the late Miocene. Sivatherium hendeyi, the earliest known species of the Sivatherium genus, was first described from the lower Pliocene of Langebaanweg (5.15 ± 0.1 Ma, Cape Province, South Africa). Here we describe the first possible occurrence of Sivatherium from western Europe from the lower Pliocene (MN14) of Puerto de la Cadena (4.9 Ma, Murcia, Spain). The new material consists of dental and postcranial remains. The Puerto de la Cadena Sivatherium, together with the presence of Macaca sp. and Debruijnimys sp., indicates a connection between African and European faunas during the early Pliocene and a possible …
Evolution and systematics of the late miocene spanish Giraffidae (Mammalia, Ruminantia, Pecora)
2017
Esta tesis doctoral se centra en la filogenia y sistemática de los jiráfidos del Mioceno tardío español (Mammalia, Ruminantia, Pecora). Los jiráfidos son un grupo monofilético de rumiantes caracterizados por la presencia de caninos bilobulados y un tipo especial de apéndice craneal epifisario y permanente denominado osicono [1]. Asimismo son los únicos supervivientes del clado Giraffomorpha, un grupo de rumiantes pécoras que contiene a Propalaeoryx junto con los Palaeomerycidae, Prolybitheriidae, Climacoceratidae y Giraffidae [2,3].Actualmente la familia Giraffidae está representada por tan solo dos géneros actuales africanos, Okapia, con una única especie, Okapia johnstoni, que habita las …
Why ruminating ungulates chew sloppily: Biomechanics discern a phylogenetic pattern.
2019
Altres ajuts: "Beatriu de Pinos" 2014 - BP-A 00048 There is considerable debate regarding whether mandibular morphology in ungulates primarily reflects phylogenetic affinities or adaptation to specific diet. In an effort to help resolve this debate, we use three-dimensional finite element analysis (FEA) to assess the biomechanical performance of mandibles in eleven ungulate taxa with well-established but distinct dietary preferences. We found notable differences in the magnitude and the distribution of von Mises stress between Artiodactyla and Perissodactyla, with the latter displaying lower overall stress values. Additionally, within the order Artiodactyla the suborders Ruminantia and Tylo…
Observations on the postcranial anatomy of Hoplitomeryx (Mammalia, Ruminantia, Hoplitomerycidae) from the Miocene of the Apulia Platform (Italy)
2016
The untypical ruminants of the Apulia Platform (central and southeastern Italy), originally accommodated in the genus Hoplitomeryx, have been recently revised. The Scontrone (Abruzzo, central Italy) representatives were included in a new genus, Scontromeryx, with the addition of a new species, Scontromeryx mazzai. In contrast, the Gargano ones were left in Hoplitomeryx, but also in this case with the addition of three new species, Hoplitomeryx devosi, H. macpheei, and H. kriegsmani, described on postcranial remains and based on body mass calculations and using a size class scoring technique. The results of the present study show that Scontromeryx is invalid, that S. mazzai is imperfectly de…