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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]
Ornithorhynchoidea is a superfamily of mammals containing the only living monotremes, the platypus and the echidnas, as well as their closest fossil relatives, to the exclusion of more primitive fossil monotremes of uncertain affinity.
Genus Tachyglossus (short-beaked echidna) Short-beaked echidna (Tachyglossus aculeatus) Genus Zaglossus (long-beaked echidnas) Western long-beaked echidna (Zaglossus bruijnii) Eastern long-beaked echidna (Zaglossus bartoni) Sir David's long-beaked echidna (Zaglossus attenboroughi)
A short-beaked echidna building a defensive burrow in French Island National Park (43 seconds) Male echidnas have a four-headed penis. [26] During mating, the heads on one side "shut down" and do not grow in size; the other two are used to release semen into the female's two-branched reproductive tract.
The Ornithorhynchidae / ɔːr ˌ n ɪ θ ə ˈ r ɪ ŋ k ɪ d iː / are one of the two extant families in the order Monotremata, and contain the platypus and its extinct relatives. The other family is the Tachyglossidae, or echidnas.
The echidna spurs are vestigial and have no known function, while the platypus spurs contain venom. [42] Molecular data show that the main component of platypus venom emerged before the divergence of platypus and echidnas, suggesting that the most recent common ancestor of these taxa was also possibly a venomous monotreme.
The Tasmanian short-beaked echidna (Tachyglossus aculeatus setosus) is a subspecies of short-beaked echidna endemic to Tasmania. [1] It was first described by Étienne Geoffroy Saint-Hilaire in 1803 as Echidna setosa, [1] [2] from two specimens, one of which was found in or near Bruny Island. [1] Jackson and others (2021) [3] review the ...
Newer taxonomy is frequently based on cladistics instead, giving a variable number of major "branches" of the tetrapod family tree. As is the case throughout evolutionary biology today, there is debate over how to properly classify the groups within Tetrapoda.