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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.
The male echidna's penis is 7 centimetres (2.8 in) long when erect, and its shaft is covered with penile spines. [29] These may be used to induce ovulation in the female. [30] It is a challenge to study the echidna in its natural habitat, and they show no interest in mating while in captivity. Prior to 2007, no one had ever seen an echidna ...
Echidna nebulosa (J. N. Ahl, 1789) (snowflake moray) Echidna nocturna (Cope, 1872) (freckled moray) Echidna peli (Kaup, 1856) (pebbletooth moray) Echidna polyzona (J. Richardson, 1845) (barred moray) Echidna rhodochilus Bleeker, 1863 (pink-lipped moray eel) Echidna unicolor L. P. Schultz, 1953 (unicolor moray) Echidna xanthospilos (Bleeker ...
There are only five existing species of monotremes: the platypus and four species of echidna. “To a biologist, the idea that that branch could go extinct would be a great tragedy,” Kempton said.
The eastern long-beaked echidna is a member of the order Monotremata. Although monotremes have some of the same mammal features such as hair and mammary glands, they do not give birth to live young, they lay eggs. Like birds and reptiles, monotremes have a single opening, the cloaca. The cloaca allows for the passage of urine and feces, the ...
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.
This article lists fish commonly kept in aquariums and ponds. ... Muraenidae. Echidna (fish) Echidna nebulosa; Echidna polyzona; Muraena. Muraena lentiginosa; ...
Opalios was nicknamed "echidnapus" (a portmanteau of "echidna" and "platypus") in the press following its description due to the specimen's similarities to both extant monotreme lineages. [ 2 ] Several other monotremes are known from the Griman Creek Formation, including Dharragarra and Parvopalus —which were described in the same publication ...