Palaeopascichnid

A Palaeopascichnid describes a series of worm-like macrofossils that are distributed in Ediacaran rocks. They consist of an occasionally branching series of globular or elongate chambers. These fossils started appearing in the Vendian (late Ediacaran).[1] The first specimens of this group were discovered in 1972 by Yu.R Becker.[2]

A specimen of Palaeopascichnus, a Palaeopascichnid which is now recognized as a body fossil.
Not to be confused with Palaeopascichnus.

pascichnid fossils are believed to be the first ever macroorganisms (or macrofossils) that show signs of an agglutinated skeleton.[1]

Genera

Genera currently considered to belong to the group include:[1]

Palaeopascichnus delicatus

Yelovichnus gracilis

Orbisiana simplex

Orbisiana linearis

See also

References
  1. Kolesnikov, A. V. (2019). "Stratigraphic correlation potential of the Ediacaran palaeopascichnids". Estudios Geológicos. 75 (2): 102. doi:10.3989/egeol.43588.557. S2CID 210269249.
  2. Grazhdankin, Dmitriy (2014). "Patterns of Evolution of the Ediacaran Soft-Bodied Biota". Journal of Paleontology. 88 (2): 269–283. doi:10.1666/13-072. S2CID 129317326.
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