The systematic position of Hoplitomerycidae (Ruminantia) revisited

Hoplitomeryx Leinders was originally described only on cranial characters. The type specimens were found during the 1970’s in karstic fissure fillings, most likely of Messinian age, in Gargano (Apulia, southeastern Italy), between Poggio Imperiale (418490300 N, 158210580 E) and Apricena (418470060 N, 158260410 E). During the 1990’s, Hoplitomeryx remains were also discovered in the lower […]

Nanger, Eudorcas, Gazella, and Antilope form a well-supported chromosomal clade within Antilopini (Bovidae, Cetartiodactyla)

The evolutionary clade comprising Nanger, Eudorcas, Gazella, and Antilope, defined by an X;BTA5 translocation, is noteworthy for the many autosomal Robertsonian fusions that have driven the chromosome number variation from 2n=30 observed in Antilope cervicapra, to the 2n=58 in present Eudorcas thomsoni and Eudorcas rufifrons. This work reports the phylogenetic relationships within the Antilopini using […]

Molecular and Morphological Phylogenies of Ruminantia and the Alternative Position of the Moschidae

The ruminants constitute the largest group of ungulates, with >190 species, and its distribution is widespread throughout all continents except Australia and Antarctica. Six families are traditionally recognized within the suborder Ruminantia: Antilocapridae (pronghorns), Bovidae (cattle, sheep, and antelopes), Cervidae (deer), Giraffidae (giraffes and okapis), Moschidae (musk deer), and Tragulidae (chevrotains). The interrelationships of the […]

Large-scale ruminant genome sequencing provides insights into their evolution and distinct traits

The ruminants are one of the most successful mammalian lineages, exhibiting morphological and habitat diversity and containing several key livestock species. To better understand their evolution, we generated and analyzed de novo assembled genomes of 44 ruminant species, representing all six Ruminantia families. We used these genomes to create a time-calibrated phylogeny to resolve topological […]

A complete estimate of the phylogenetic relationships in Ruminantia: a dated species-level supertree of the extant ruminants

This paper presents the first complete estimate of the phylogenetic relationships among all 197 species of extant and recently extinct ruminants combining morphological, ethological and molecular information. The composite tree is derived by applying matrix representation using parsimony analysis to 164 previous partial estimates, and is remarkably well resolved, containing 159 nodes (>80% of the […]

Higher masseter muscle mass in grazing than in browsing ruminants.

Using cranioskeletal measurements, several studies have generated evidence that grazing ruminants have a more pronounced mastication apparatus, in terms of muscle insertion areas and protuberances, than browsing ruminants, with the resulting hypothesis that grazers should have larger, heavier chewing muscles than browsers. However, the only investigation of this so far [Axmacher and Hofmann (J Zool […]

The taxonomic history of giraffe – a brief review

The giraffe has long been considered a single species, albeit highly polymorphic. Its high degree of geographically structured phenotypic variation has lead to 27 recorded specific or subspecific taxon names. This article briefly reviews the significant episodes in the complex taxonomic history of the giraffe.

The use of archeological and ethnographical information to supplement the historical record of the distribution of large mammalian herbivores in South Africa

The introduction of animal taxa  to areas where they do not naturally occur has the potential to damage severely the native fauna and flora. Introductions, both accidental and intentional, to Australia, New Zealand, Marion Island and other oceanic islands provide spectacular examples of this. Non-native mammalian herbivores often become invasive in the absence of their […]

Subordinal artiodactyl relationships in the light of phylogenetic analysis of 12 mitochondrial protein-coding genes

Extant artiodactyls (even-toed hoofed mammals) are traditionally divided into three main lineages: Suiformes (pigs, peccaries and hippopotamuses), Tylopoda (camels and llamas) and Ruminantia (bovids, deer, tragulids and giraffes). Recent molecular studies have not supported a close relationship between pigs and hippopotamuses, however, instead grouping hippopotamuses with Cetacea (whales, dolphins and porpoises). In this study we […]