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3 天前 · Cnidaria. Cnidaria ( / nɪˈdɛəri.ə, naɪ -/ ni-DAIR-ee-ə, NY-) [4] is a phylum under kingdom Animalia containing over 11,000 species [5] of aquatic animals found both in fresh water and marine environments (predominantly the latter), including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites.
3 天前 · Mosquito. This article is about the insect. For other uses, see Mosquito (disambiguation). Mosquitoes, the Culicidae, are a family of small flies consisting of 3,600 species. The word mosquito (formed by mosca and diminutive -ito) [2] is Spanish and Portuguese for little fly. [3] .
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3 天前 · The other more primitive primates (Strepsirrhini) have the ability to make vitamin C. Synthesis does not occur in some species in the rodent family Caviidae, which includes guinea pigs and capybaras, but does occur in other rodents, including rats and mice.
3 天前 · Species synonymy. Smilodon is a genus of felids belonging to the extinct subfamily Machairodontinae. It is one of the best known saber-toothed predators and prehistoric mammals. Although commonly known as the saber-toothed tiger, it was not closely related to the tiger or other modern cats.
1 天前 · Snakes are elongated, limbless, carnivorous reptiles of the suborder Serpentes ( / sɜːrˈpɛntiːz / ). [2] Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more joints than their lizard ancestors, enabling them to swallow prey much larger than ...
6 天前 · Otodus megalodon ( / ˈmɛɡələdɒn / MEG-əl-ə-don; meaning "big tooth"), commonly known as megalodon, is an extinct species of giant mackerel shark that lived approximately 23 to 3.6 million years ago (Mya), from the Early Miocene to the Pliocene epochs.
3 天前 · Penguins are a group of aquatic flightless birds from the family Spheniscidae ( / sfɪˈnɪsɪdiː, - daɪ /) of the order Sphenisciformes ( / sfɪˈnɪsəfɔːrmiːz / ). [4] . They live almost exclusively in the Southern Hemisphere: only one species, the Galápagos penguin, is found north of the Equator.
