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Há 4 dias · It is now generally thought that the Calcarea (sponges with calcium carbonate spicules) are more closely related to Cnidaria, Ctenophora (comb jellies) and Bilateria (all the more complex animals) than they are to the other groups of sponges.
Há 4 dias · vertebrate, any animal of the subphylum Vertebrata, the predominant subphylum of the phylum Chordata. They have backbones, from which they derive their name. The vertebrates are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central nervous system partly enclosed within the backbone.
Há 4 dias · Hyman L.H. (1951) The Invertebrates. Vol II. Platyhelminthes and Rhynchocoela. The Acoelomate Bilateria. McGraw-Hill, New York, 572 pp. Philippé H, Brinkmann H, Copley RR, Moroz LL, Nakano H, Poustka AJ, Wallberg A, Peterson KJ, Telford MJ (2011) Acoelomorph flatworms are deuterostomes related to Xenoturbella.
Há 3 dias · Origine dei termini. Il termine "squalo" deriva dal latino squalus, imparentato con l'antico nordico hvalr «balena» (inglese whale, tedesco Wal-fisch) e l'antico prussiano kalis, «pesce siluro»; il termine indicava un pesce mostruoso e di grandi dimensioni, forse connesso con il proto-ugrofinnico *kala (finlandese kala, ungherese hal) «pesce mitico»; non è possibile invece collegare ...
Há 21 horas · A phylogenetic classification of jumping spiders (Araneae: Salticidae). Journal of Arachnology 43 (3):231–292. DOI: 10.1636/arac-43-03-231-292. full article (PDF). Reference page . Maddison, W.P. 2024. Hivanua, a new genus of harmochirine jumping spiders from the Marquesas Islands (Araneae, Salticidae, Harmochirina). ZooKeys 1200: 215–230.
Há 1 dia · Etymology. Until the 16th century, sharks were known to mariners as "sea dogs". This is still evidential in several species termed "dogfish," or the porbeagle.The etymology of the word shark is uncertain, the most likely etymology states that the original sense of the word was that of "predator, one who preys on others" from the Dutch schurk, meaning 'villain, scoundrel' (cf. card shark, loan ...
Há 21 horas · Official website. NBA.com. The National Basketball Association ( NBA) is a professional basketball league in North America composed of 30 teams (29 in the United States and 1 in Canada). It is one of the major professional sports leagues in the United States and Canada and is considered the premier professional basketball league in the world.
