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2 giorni fa · A study in 2001 based on comparisons of ribosome DNA concluded that the most fundamental division within sponges was between glass sponges and the rest, and that Eumetazoa are more closely related to calcareous sponges (those with calcium carbonate spicules) than to other types of sponge.
2 giorni fa · Eumetazoa: Clade: ParaHoxozoa: Phylum: Cnidaria Hatschek, 1888: Subphyla and classes; Subphylum Anthozoa—corals and sea anemone. Class Octocorallia; Class Hexacorallia; Class Ceriantharia; Subphylum Medusozoa—jellyfish and hydrozoans: Class Cubozoa—box jellyfish, sea wasps; Class Hydrozoa—hydroids, hydra-like animals; Class ...
2 giorni fa · Mollusca is the second-largest phylum of invertebrate animals, after Arthropoda; members are known as molluscs or mollusks [a] ( / ˈmɒləsks / ). Around 76,000 extant species of molluscs are recognized. [3] The number of fossil species is estimated between 60,000 and 100,000 additional species. [4] The proportion of undescribed species is ...
3 giorni fa · The Lobopodian concept varies from author to author. [8] Its most general sense refers to a suite of mainly Cambrian worm-like panarthropod taxa possessing lobopods – for example, Aysheaia, Hallucigenia, and Xenusion – which were traditionally united as "Xenusians" or "Xenusiids" (class Xenusia). [16] [17] [18] Certain Dinocaridid genera ...
1 apr 2023 · Subkingdom: Eumetazoa; Superphylum: Deuterostomia; Phylum: Echinodermata; Echinoderms Location and Habitat. Researchers believe the oldest fossils of echinoderms from the lower Cambrian Period to be asterozoa from the Ordovician Period, as well as crinoids from the Paleozoic Era.
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5 giorni fa · La tredicesima edizione del talent show musicale Amici di Maria De Filippi è andata in onda nella sua fase serale dal 29 marzo al 27 maggio 2014 in prima serata su Canale 5 per dieci puntate con la conduzione di Maria De Filippi. Le prime cinque puntate insieme alla settima e all'ottava puntata sono andate in onda di sabato, la sesta e la nona ...
