Palaeopascichnus

Palaeopascichnus is an Ediacaran fossil comprising a series of lobes, first originating before the Gaskiers glaciation;^[1] it is plausibly a protozoan, but probably unrelated to the classical 'Ediacaran biota'.^[2] Once thought to represent a trace fossil, it is now recognized as a body fossil^[3] and corresponds to the skeleton of an agglutinating organism.^[4]

Palaeopascichnus Temporal range: Ediacaran, 580–542 Ma[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	incertae sedis
Genus:	†Palaeopascichnus Palij, 1976
Species
P. delicatus Palij, 1976 (type) P. linearis Fedonkin, 1976 P. gracilis Fedonkin, 1985
Synonyms
Inrites Fedonkin, 1980 Yelovichnus Fedonkin, 1985 Catellichnus Becker, 1989 Iterichnus Becker, 2013 Pseudobergaueria Becker, 2013

Not to be confused with Palaeopascichnid.

See also

• List of Ediacaran genera

• Palaeopascichnid

References

1. Liu, Alexander G.; Tindal, Benjamin H. (2020). "Ediacaran macrofossils prior to the ~580 Ma Gaskiers glaciation in Newfoundland, Canada". Lethaia. 54 (2): 260–270. doi:10.1111/let.12401.
2. Antcliffe, J. B.; Gooday, A. J.; Brasier, M. D. (2011). "Testing the protozoan hypothesis for Ediacaran fossils: A developmental analysis of Palaeopascichnus". Palaeontology. 54 (5): 1157. Bibcode:2011Palgy..54.1157A. doi:10.1111/j.1475-4983.2011.01058.x.
3. Jensen, S. (2003). "The Proterozoic and Earliest Cambrian Trace Fossil Record; Patterns, Problems and Perspectives". Integrative and Comparative Biology. 43 (1): 219–28. doi:10.1093/icb/43.1.219. PMID 21680425.
4. Kolesnikov, Anton V; Rogov, Vladimir I; Bykova, Natalia V; Danelian, Taniel; Clausen, Sébastien; Maslov, Andrey V; Grazhdankin, Dmitriy V (2018). "The oldest skeletal macroscopic organism Palaeopascichnus linearis". Precambrian Research. 316: 24–37. Bibcode:2018PreR..316...24K. doi:10.1016/j.precamres.2018.07.017. S2CID 134885946.