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Echidnas are possibly named after Echidna, a creature from Greek mythology who was half-woman, half-snake, as the animal was perceived to have qualities of both mammals and reptiles. [citation needed] An alternative explanation is a confusion with Ancient Greek: ἐχῖνος, romanized: ekhînos, lit. 'hedgehog, sea urchin'. [5]
Erinaceidae / ˌ ɛr ɪ n ə ˈ s iː ɪ d iː / is a family in the order Eulipotyphla, consisting of the hedgehogs and moonrats.Until recently, it was assigned to the order Erinaceomorpha, which has been subsumed with the paraphyletic Soricomorpha into Eulipotyphla.
The Southern African hedgehog is said to be a slow mover; however, when threatened, it can move surprisingly fast at 6 to 7 km/h (3.7 to 4.3 mph). [3] During the day, they typically stay where they live, which is an area that is covered with vegetation or in a hole in the ground.
The long-beaked echidna's walk presents multiple differences from a lizard's. An echidna's walking pattern is more upright than a lizard's, this represents a pattern closer to a parasagittal kind of therian. Echidnas and therians both have a dynamic equilibration rather than a static one. [10]
A skin-skeletal preparation Close-up of the last 5 millimetres (0.20 in) of a hedgehog spine (SEM microscopy) A hedgehog that feels threatened can roll into a tight ball. Hedgehogs roll into a tight spiny ball when threatened, tucking in the furry face, feet, and belly. [7] The hedgehog's back contains two large muscles that direct the quills.
The team also found an entirely new genus of tree-dwelling shrimp, countless new species of insects and a previously unknown cave system.
Several mammal groups have independently evolved prickly protrusions of the skin – echidnas , the insectivorous hedgehogs, some tenrecs (a diverse group of shrew-like Malagasy mammals), Old World porcupines and New World porcupines (another biological family of rodents).
The fictional character Knuckles the Echidna from Sonic the Hedgehog is a red short beaked echidna who possesses superhuman strength. The short-beaked echidna is an iconic animal in contemporary Australia, notably appearing on the five-cent coin (the smallest denomination), [ 122 ] and on a $200 commemorative coin released in 1992. [ 123 ]