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Antler phylogenetics. Antlers originated once in the cervid lineage. [36] The earliest fossil remains of antlers that have been found are dated to the early Miocene, about 17 million years ago. These early antlers were small and had just two forks. [36] As antlers evolved, they lengthened and gained many branches, or tines, becoming more ...
Four families of even-toed ungulates have cranial appendages. These Pecora (with the exception of the musk deer), have one of four types of cranial appendages: true horns, antlers, ossicones, or pronghorns. [31] True horns have a bone core that is covered in a permanent sheath of keratin, and are found only in the bovids.
Description. Profile of an adult male. Pronghorns have distinct white fur on their rumps, sides, breasts, bellies, and across their throats. Adult males are 1.3–1.5 m (4 ft 3 in – 4 ft 11 in) long from nose to tail, stand 81–104 cm (2 ft 8 in – 3 ft 5 in) high at the shoulder, and weigh 40–65 kg (88–143 lb).
Blackbuck. The blackbuck (Antilope cervicapra), also known as the Indian antelope, is a medium-sized antelope native to India and Nepal. It inhabits grassy plains and lightly forested areas with perennial water sources. It stands up to 74 to 84 cm (29 to 33 in) high at the shoulder. Males weigh 20–57 kg (44–126 lb), with an average of 38 kg ...
[1] [4] In non-human animals, secondary sex characteristics include, for example, the manes of male lions, [3] the bright facial and rump coloration of male mandrills, and horns in many goats and antelopes. Secondary sex characteristics are particularly evident in the sexually dimorphic phenotypic traits that distinguish the sexes of a species. [5]
The chital or cheetal (Axis axis; / tʃiːtəl /), also known as the spotted deer, chital deer and axis deer, is a deer species native to the Indian subcontinent. It was first described and given a binomial name by German naturalist Johann Christian Polycarp Erxleben in 1777. A moderate-sized deer, male chital reach 90 cm (35 in) and females 70 ...
Greater kudu. The greater kudu (Tragelaphus strepsiceros) is a large woodland antelope, found throughout eastern and southern Africa. Despite occupying such widespread territory, they are sparsely populated in most areas due to declining habitat, deforestation, and poaching. [2] The greater kudu is one of two species commonly known as kudu, the ...
Horns develop in the periosteum over the frontal bone, and can be curved or straight. [4] Surface features on the keratin sheath (e.g., ridges or twists) are thought to be caused by differential rates of growth around the bone core. [4] Antlers are bony structures that are shed and replaced each year in members of the family Cervidae.
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