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The Giraffidae are a family of ruminant artiodactyl mammals that share a recent common ancestor with deer and bovids.This family, once a diverse group spread throughout Eurasia and Africa, presently comprises only two extant genera, the giraffe (between one and eight, usually four, species of Giraffa, depending on taxonomic interpretation) and the okapi (the only known species of Okapia).
Illustration of extinct Shansitherium species and Palaeotragus microdon (Giraffidae), showing a diversity of ossicone shapes and sizes no longer seen in extant animals Ossicones are only found in some members of the superfamily Giraffoidea , which includes the family Giraffidae (to which giraffes, okapi, and extinct relatives belong) and the ...
Giraffoidea is a superfamily that includes the families Climacoceratidae, Prolibytheriidae, and Giraffidae. The only extant members in the superfamily are the giraffes and okapi. The Climacoceratidae are also placed in the superfamily, but were originally placed within the family Palaeomerycidae.
Sivatheriinae is an extinct subfamily of giraffids characterized by their robust size, short limbs, and the presence of large complicated ossicones in males. [2] These animals lived in Asia, Africa, and parts of Europe from the late Miocene and early Pleistocene.
The family Giraffidae was once much more extensive, with over 10 fossil genera described. [6] The elongation of the neck appears to have started early in the giraffe lineage. Comparisons between giraffes and their ancient relatives suggest vertebrae close to the skull lengthened earlier, followed by lengthening of vertebrae further down. [8]
Articles relating to the giraffe, a tall African hoofed mammal belonging to the genus Giraffa.It is the tallest living terrestrial animal and the largest ruminant on Earth. . The giraffe's chief distinguishing characteristics are its extremely long neck and legs, its horn-like ossicones, and its spotted coat patter
The current IUCN taxonomic scheme lists one species of giraffe with the name G. camelopardalis and nine subspecies. [1] [7] A 2021 whole genome sequencing study suggests the northern giraffe as a separate species, and postulates the existence of three distinct subspecies, [8] and more recently, one extinct subspecies.
Giraffomorpha is a clade of pecoran ruminants containing the superfamilies Palaeomerycoidea (Palaeomerycidae) and Giraffoidea (Giraffidae, Prolibytheriidae and Climacoceratidae), of which the giraffe and okapi of the Giraffidae are the only extant members of the once-diverse clade as a result of a decline in diversity after the Miocene as a result of declines in temperatures.