Vetulicolida
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Vetulicolida
Vetulicolida is one of the two classes of the enigmatic extinct phylum Vetulicolia. It contains one order, Vetulicolata, which is divided into two families, Vetulicolidae and Didazoonidae Didazoonidae is a family of Vetulicolian chordates containing the species ''Didazoon haoae'' and ''Pomatrum ventralis''. Their fossils are from the Maotianshan shales Cambrian Lagerstätte A Lagerstätte (, from ''Lager'' 'storage, lair' '' .... References {{Paleo-deuterostome-stub Vetulicolia ...
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Vetulicolia
VetulicoliaThe taxon name, Vetulocolia, is derived from the type genus, ''Vetulicola'', which is a compound Latin word composed of ''vetuli'' "old" and ''cola'' "inhabitant". is a taxon (either phylum or subphylum in rank) encompassing several extinct Cambrian organisms. The vetulicolian body comprises two parts: a voluminous anterior forebody, tipped with an anteriorly positioned mouth and lined with a row of five round to oval-shaped features on each lateral side, which have been interpreted as gills (or at least openings in the vicinity of the pharynx); and a posterior section that primitively comprises seven segments and functions as a tail. All vetulicolians lack preserved appendages of any kind, having no legs, feelers or even eyes. The area where the anterior and posterior parts join is constricted. Their affinity has been uncertain; they have been considered to represent stem- and crown-group arthropods, stem-group vertebrates, and early deuterostomes. The general scienti ...
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Vetulicolidae
Vetulicolidae is an extinct family of Early Cambrian deuterostomes comprising two genera: ''Vetulicola'' and ''Ooedigera ''Ooedigera peeli'' is an extinct vetulicolian from the Early Cambrian of North Greenland. The front body was flattened horizontally, oval-shaped, likely bearing a reticulated or anastomosing pattern, and had 5 evenly-spaced gill pouches along t ...''. References Vetulicolia {{Paleo-deuterostome-stub ...
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Didazoonidae
Didazoonidae is a family of Vetulicolian chordates containing the species ''Didazoon haoae'' and ''Pomatrum ventralis''. Their fossils are from the Maotianshan shales Cambrian Lagerstätte A Lagerstätte (, from ''Lager'' 'storage, lair' '' Stätte'' 'place'; plural ''Lagerstätten'') is a sedimentary deposit that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues. These for .... References Vetulicolia Prehistoric chordate families Cambrian first appearances Cambrian extinctions {{chordate-stub Animal families ...
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Vetulicola Cuneata
''Vetulicola cuneata'' ("Wedged-shaped ancient dweller") is the type species of a genus of small, Early Cambrian deuterostome animals from the Chengjiang biota of China. Description ''Vetulicola cuneata'' has a body composed of two distinct parts of approximately equal length. The anterior part is rectangular in shape, and enclosed by a carapace-like structure of four rigid cuticular plates fused together, with a large, V-shaped mouth at the front end: there is a keel-like extension of the body wall on the top and belly. The tail-like posterior section is slender, strongly cuticularised and placed dorsally. Paired openings connecting the pharynx to the outside run down the sides. These features are interpreted as possible primitive gill slits. ''Vetulicola cuneata'' could be up to 7 cm long. Lifestyle It is assumed that ''V. cuneata'' spent most or all of its time swimming in the water column. Sediment found within the gut suggest that it was a deposit-feeder, possibly sw ...
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