Inarticulata - Wikipedia
Inarticulata was historically defined as one of the two classes of the phylum Brachiopoda and referred to those having no hinge. The other class was Articulata, meaning articulated — having a hinge between the dorsal and ventral valves. These classifications have now been superseded, see brachiopod classification.
Wikipedia · Tekst onder CC-BY-SA-licentieWEBThe Inarticulata, the most abundant brachiopods of the Cambrian, soon gave way to the Articulata and declined greatly in number and variety toward the end of the Cambrian. …
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WEBInarticulata en de Articulata (zie Milson en Rigby, 2009 voor recente alternatieve indelingen). De eerste groep, waarbij de kleppen met spiertjes bij elkaar worden …
Inarticulata, brachiopoda, Lophophorata: what do they signify?
WEBIn this cladogram, Inarticulata and Articulata are each monophyletic, with 9 and 32 synapomorphies, respectively. Calcareous skeletal mineralogy is clearly primitive for …
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- Nonarticulate lampshells, also known as inarticulated brachiopods, have been known since the Lower Cambrian period, about 550–600 million years ago. The traditional placement of these animals is in the class Inarticulata, but a more recent classification divides them into two subphyla: the Linguliformea and the Craniiformea. The living representati...
BRACHIOPODEN een vergeten groep - Natuurtijdschriften
WEBInarticulata en Articulata D. e eerstgenoemde zijn vaan k klein (1/ —2 1 cm) en konservatief zodat ze voor de stratigrafie van beperkt belan zijng Z. e hebben een inge wikkelder …
WEBApproximately 450 species of living brachiopods are currently known, and have traditionally been divided into two classes: Inarticulata (orders Lingulida and Acrotretida) and …
Brachiopoda | SpringerLink
WEBInarticulata. The known genera of Inarticulata are usually small, some ancient ones are minute, but a few elongated shells attain a length of 7.6 cm. They are usually brown, …
WEBIn older classification schemes, phylum Brachiopoda was divided into two classes: Articulata and Inarticulata. Since most orders of brachiopods have been extinct since the end of the Paleozoic era 251 million years ago, …
Inarticulata, brachiopoda, Lophophorata: what do they …
WEB1 jan. 1992 · PDF | Higher taxonomic ranks typically distinguish morphologically disparate groups whose within-group common ancestry is assumed to be more recent than... | Find, read and cite all the research ...
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