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The long-nosed potoroo exhibits many morphological specializations such as an elongated pointed rostral region (nose), erect ears, large eyes, claws for digging, and long robust hind legs. [5] It is only a small marsupial, with a body length between 34 and 38 cm (13–15 in), and a semi-prehensile tail length of 15 to 24 cm (5.9–9.4 in). [6]
All shrews are tiny, most no larger than a mouse. The largest species is the Asian house shrew (Suncus murinus) of tropical Asia, which is about 15 cm (6 in) long and weighs around 100 g (3 + 1 ⁄ 2 oz) [2] The Etruscan shrew (Suncus etruscus), at about 3.5 cm (1 + 3 ⁄ 8 in) and 1.8 grams (28 grains), is the smallest known living terrestrial mammal.
This snake is very slender, roughly 2 cm (0.79 in) thick, and may attain a total length of about 1.5–2 m (59–79 in). The tail is long and very delicate, but mostly used to hold on while reaching for prey. The head is aerodynamically shaped and very pointy, the mouth is very large and extends almost the whole length of the head.
All coatis share a slender head with an elongated, flexible, slightly upturned nose, small ears, dark feet, and a long non-prehensile tail used for balance and signaling. Ring-tailed coatis have either a light brown or black coat, with a lighter underpart and a white-ringed tail in most cases.
The nose is short, yet it is pointy, and the eyes are relatively big. These mice also have a large infraorbital foramen . With the exception of the Aye-Aye , the meadow jumping mouse is the only mammal to have eighteen teeth with a dental formula of: 1/1, 0/0, 1/0, and 3/3.
The two living species of hare-wallabies (genus Lagorchestes; two other species in this genus are extinct) are small animals that have the movements and some of the habits of hares. The three species (two extant and one extinct) of nail-tail wallabies (genus Onychogalea ) have one notable feature: a horny spur at the tip of the tail; its ...
However, the chorioallantoic placenta is small compared to those of the Placentalia, and lacks chorionic villi. Bandicoots can reach 11 to 31 in (28 to 79 cm) in length, and 0.4 to 3.5 lb (0.18 to 1.6 kg) in weight. A bandicoot has a long, pointed snout, large ears, a short body, and a long tail.
The dentition is distinguished by sharp and strong canines, the broad permanent premolars are long and low with a profile that is serrated, concave, or horizontal at the cutting edge. An acutely pointed incisor extends from the long and narrow lower mandible. The dental formula of the genus is the same as other potoroid taxa: I3/1 C1/0 PM1/1 M4/4.