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Hace 1 día · Sponges in temperate regions live for at most a few years, but some tropical species and perhaps some deep-ocean ones may live for 200 years or more. Some calcified demosponges grow by only 0.2 mm (0.0079 in) per year and, if that rate is constant, specimens 1 m (3.3 ft) wide must be about 5,000 years old.
Hace 1 día · 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.
Hace 1 día · Condylipoda Latreille, 1802. Arthropods ( / ˈɑːrθrəpɒd / ARTH-rə-pod) [19] are invertebrates in the phylum Arthropoda. They possess an exoskeleton with a cuticle made of chitin, often mineralised with calcium carbonate, a body with differentiated ( metameric) segments, and paired jointed appendages. In order to keep growing, they must go ...
Hace 1 día · Adl et al., 2005 を正規のランク とし、動物 Animalia Linnaeus, 1758 および真正後生動物 Eumetazoa Bütschli, 1910 と同義（後生動物のシノニム）として海綿動物、平板動物、刺胞動物、有櫛動物を含めながらもそれらを除いた左右相称動物を界に相当する階級とした 。
