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Extinct genus of marine animals
Praecambridium sigillum is an extinct organism that superficially resembles a segmented trilobite-like arthropod, and it was originally described as such
Praecambridium
Extinct phylum of animals
Fedonkin in 1985 for such animals as Dickinsonia, Vendia, Cephalonega, Praecambridium and currently many other Proarticulata are described (see list). Due
Proarticulata
Extinct family of cephalozoans
2004 † Praecambridium (?) Ivantsov, 1999 † Praecambridium sigillum (?) Ivantsov, 1999 Due to the rather small size of known Praecambridium specimens
Sprigginidae
Extinct species of disc-shaped organism
2007 † Praecambridium (?) Ivantsov, 1999 † Praecambridium sigillum (?) Ivantsov, 1999 Due to the rather small size of known Praecambridium specimens
Yorgiidae
Head section of an arthropod
cephalothorax. In the Late Precambrian or Lower Cambrian Proarticulata species Praecambridium sigillum, that superficially resembles a trilobite, the term is also
Cephalon_(arthropod_head)
Extinct class of marine animals
2004 † Praecambridium Glaessner and Wade, 1966, previously classified as Yorgiidae; now considered a juvenile form of Spriggina † Praecambridium sigillum
Cephalozoa
Vendian fossil
closest relative, separated from Dickinsonia and closer to Yorgia, Praecambridium, Archaeaspinus, and Vendia, since all of them share a dextrally bent
Andiva
Extinct genus of invertebrates
Fedonkin as a problematic organism, being grouped together with Vendia, Praecambridium and Vendomia as possible stem-group arthropods due to a vague similarity
Cephalonega
Fossilised Precambrian life forms
2022 China Portfjeldia Willman & Peel 2022 Tubular fossil Greenland Praecambridium Glaessner et Wade 1966 Proarticulata Australia Primocandelabrum Hofmann
List_of_Ediacaran_genera
Geologic formation in South Australia
(PDF) on 2007-09-29. Glaessner, Martin F.; Wade, Mary (January 1971). "PRAECAMBRIDIUM ‐ A PRIMITIVE ARTHROPOD". Lethaia. 4 (1): 71–77. doi:10.1111/j.1502-3931
Rawnsley_Quartzite
Extinct class of simple animals
Nauchno-Tekh. Izd. pp. 504–507. Glaessner, M.F.; Wade, M. (1971). "Praecambridium - a primitive arthropod". Lethaia. 4 (1): 71–77. doi:10.1111/j.1502-3931
Vendiamorpha
Extinct species of Cambrian organism
isomers do not. Similarities have also been drawn between Tamga and Praecambridium sigillum in again, the overall shape of the body and the presence of
Tamga_hamulifera
Glaessner & Wade Ediacaran Australia The type species is O. concentricum. Praecambridium Gen. et sp. nov Valid Glaessner & Wade Ediacaran Australia The type
1966_in_paleontology
Element in fossils
a "hairband" like appearance. (Example cephalozoans include Yorgia, Praecambridium, Andiva, Archaeaspinus, Ivovicia, Spriggina, Marywadea and Cyanorus
Isomer_(Proarticulata)
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