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It is shaped like the hoof of a horse, giving this animal its common name. [25]: 555 In addition to the two main tagmata, the horseshoe crab also possesses a long tail-like section known as the telson. [25]: 555 In total, horseshoe crabs have 6 pairs of appendages on their cephalothorax.
A team led by palaeontologists at the University of Edinburgh used new laser technology to study the tail vane on a 150-million-year-old fossil. Large ‘tail vanes’ enabled pterosaurs to take ...
Their size varies between species from 40.9 to 60 cm (16.1 to 23.6 in) in head-to-body length with 40 to 47 cm (16 to 19 in) long tails; their tails are almost as long as head and body. [1] They have large eyes with elliptical pupils ; the iris is about the color of the fur.
Ring-tailed coatis have either a light brown or black coat, with a lighter underpart and a white-ringed tail in most cases. Coatis have a long brown tail with rings on it which are anywhere from starkly defined like a raccoon's to very faint. As in raccoons but not ring-tailed cats and cacomistles, the rings go completely around the tail ...
Procyonids are relatively small animals, with generally slender bodies and long tails, though the common raccoon tends to be bulky. Because of their general build, the Procyonidae are often popularly viewed as smaller cousins of the bear family.
Skulls of a long-tailed weasel (top), a stoat (bottom left) and least weasel (bottom right), as illustrated in Merriam's Synopsis of the Weasels of North America. The long-tailed weasel is the product of a process begun 5–7 million years ago, when northern forests were replaced by open grassland, thus prompting an explosive evolution of small, burrowing rodents.
The Atelinae are a subfamily of New World monkeys in the family Atelidae, and includes the various spider and woolly monkeys. [2] The primary distinguishing feature of the atelines is their long prehensile tails, which can support their entire body weight.
A young wild Chilean chinchilla (2006) A domesticated chinchilla Chinchilla lanigera is smaller—wild animals have body lengths up to 260 mm (10 in)—has more rounded ears—45 mm (1.8 in) in length)—and a longer tail than C. chinchilla; its tail is usually about a third the size of its body—up to 130 mm (5.1 in) compared to 100 mm (3.9 in) in C. chinchilla.