Αποτελέσματα Αναζήτησης
21 Απρ 2017 · We review the state of African ungulate taxonomy over the last 120 years, with an emphasis on the introduction of the polytypic species concept and the discipline's general neglect since the middle of the 20th century.
distribution and biology of African ungulates is available in a number of hand books and field guides, particularly Dorst and Dandelot (1970; see also Bigalke, 1968).
I have already alluded to the great variety of ungulates occurring in Africa; this has caused considerable problems for taxonomists, and the nomenclature of African ungulates is by no means settled, particularly in the family Bovidae (horned ungulates).
It contains all the names (generic to infraspecific, including synonyms) that have been applied to the butterflies of the Afrotropical zoogeographical region. For each of the more than 10 500 names, the complete journal reference and type locality is provided.
11 Μαΐ 2020 · The imbroglio regarding classification of species, subspecies and endangered species can be put into perspective by comparing three widely used definitions of ‘species’, as well as differing definitions of what constitutes a species that is threatened with extinction.
However, the predominant ungulates of the African faunas are bovids, which possess bony horns that are primitively sexually dimorphic in their occurrence. The predominant ungulates of the North American Tertiary were equids, camelids and oreodonts, which all lacked horns.
26 Απρ 2021 · Many ungulate populations exhibit a complex history of isolation and translocation. De Jong et al. report that spatial genetic structure and within-population genetic variation of red deer differ markedly from patterns assumed from present-day abundance and distribution.
