Vetulicolia
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Vetulicolia is a group of bilaterian marine animals encompassing several extinct species from the Cambrian, and possibly Ediacaran, periods. As of 2023, the majority of scientists favor placing Vetuli
Vetulicola cuneata ウェツリコラ クニエータ 1
Didazoon haoae
Schematic of V. rectangulata pharynx and alimentary canal: dashed line; ventral food grooves: dotted line; gill slits: pink
Life restoration of Banffia constricta
Deuterostome
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Deuterostomes are bilaterian animals of the superphylum Deuterostomia, which are typically characterized by their blastopore becoming their anus during embryonic development. Deuterostomia comprises t
Vetulicolia
…ancestral tunicate also had a terminal anus. Other possible placements are suggested by the Centroneuralia hypothesis, which features a paraphyletic Deuterostomia with chordates as the sister-group to protostomes. If proven true, pharyngeal slits would no longer require a deuterostome placement and vetulicolians…
Early deuterostomes and their modern counterparts