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True horns are found mainly among: Ruminant artiodactyls. Antilocapridae ; Bovidae (cattle, goats, antelopes etc.). Giraffidae: Giraffids have a pair of skin covered bony bumps on their heads, called ossicones. Cervidae: Most deer have antlers, which are not true horns due to lacking a bone core and made of keratin.
The animal had a sprawling posture as indicated by analysing its shoulder joints. The skull superficially resembles that of Styracocephalus , but the "horns" are formed from different bones; in Estemmenosuchus the horns are located on the frontals and protrude upward, whereas in Styracocephalus the horns are formed by the tabular and extend aft.
One pair of horns is located between the ears, and the other on the forehead. The posterior horns are always longer than the anterior horns, which might be mere fur-covered studs. While the posterior horns each measures 8–12 centimetres (3.1–4.7 in), the anterior ones measure 2–5 centimetres (0.79–1.97 in).
Males are larger than females and both have heavy forequarters compared to their hindquarters. They have broad muzzles, Roman noses, and shaggy manes and tails. [29] The most striking morphological differences between the black and blue wildebeest are the orientation and curvature of their horns and the colour of their coats.
The horns can be lethal: oryxes have been known to kill lions with them, and they are thus sometimes called sabre antelopes (not to be confused with the sable antelope). The horns also make the animals a prized game trophy, which has led to the near-extinction of the two northern species.
The head looks very similar to that of other Pseudocerastes species in the region, but the spider-tailed horned viper has a unique tail with a bulb-like end that is bordered by long drooping scales that give it the appearance of a spider. [4] The tail tip is waved around and used to lure insectivorous birds to within striking range. [6]
The horns, which are found on both males and females, have two to three twists and are typically 55 to 80 cm (22 to 31 in) in females and 70 to 85 cm (28 to 33 in) in males, although the maximum recorded length is 109.2 cm (43.0 in). [4] The lower and middle portions of the horns are marked with a series of 30 to 35 ring-shaped ridges. [4]
The Racka (pronounced / r ɑː t s k ɑː / Hungarian [ˈrɒts.kɒ]) or Hortobágy Racka Sheep is a breed of sheep known for its unusual spiral-shaped horns. [1] These unique appendages are unlike any other domestic sheep horns, and may grow up to 2.0 ft (0.61 m) long.