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Nasepia

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Extinct animal of class Erniettomorpha Not to be confused with Sepia (genus).

Nasepia
Temporal range: Ediacaran PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom: Animalia
Phylum: ✝Petalonamae
Class: ✝Erniettomorpha
Genus: ✝Nasepia
Germs, 1973
Species: ✝N. altae
Binomial name
✝Nasepia altae

Nasepia altae is a species of Ediacaran erniettomorph which was described in 1973 from the farms of Vrede and Chamis, Namibia. Nasepia has an appearance similar to that of most other erniettomorphs from Namibia, with it having a leaf-like body with thin ribs and spindle-shaped bodies, however it differentiates itself from other taxa such as Pteridinium and Rangea in the sense that it has smaller petaloids and with the configuration of the ribs being sub-parallel to its axis.

Description

Nasepia altae represents an erniettomorph with a morphology similar to that of a tiny leaf-like being, with it being made up of a bundle of spindle-shaped bodies, as well as fine ribs that are sub-parallel to a long axis that possess clearly marked margins on its sides. Germs (1973) also noted the appearance of transverse ribs on the body that only appear in some parts of Nasepia. The body fossils of it also share a similarity between Pteridinium simplex and Rangea schneiderhoehni with Nasepia also being made up of the same bundles of sprindle-shaped structures. Although, it contradictorily also differentiates from those two taxa because of its petaloids (structures which make up the signature leaf-like shape of petalonamids) being much smaller than those seen in Pteridinium and Rangea. Nasepia is difficult to reconstruct as a living organism.

Occurrence

Fossils of Nasepia occurred within the Nasep Quartzite Member that is within both the farms of Vrede and Chamis, Namibia and were found more specifically within the Kuibis and Schwarzrand subgroups enclosed by the Nama group.

See also

References

  1. ^ Fedonkin, Mikhail A.; Sciences), Mikhail A. (Head Fedonkin, Laboratory of Precambrian Organisms Russian Academy of; Gehling, James G.; Museum), James G. (Senior Curator Gehling, retired 6 27 2019 South Australian; Grey, Kathleen; Narbonne, Guy M.; Vickers-Rich, Patricia; University), Patricia (Director Vickers-Rich, Monash (16 March 2007). The Rise of Animals: Evolution and Diversification of the Kingdom Animalia. JHU Press. ISBN 9780801886799. Retrieved 11 May 2022 – via Google Books.{{cite book}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
  2. ^ The Dawn of Animal Life: A Biohistorical Study. CUP Archive. 20 June 1985. ISBN 9780521312165.
  3. Communications of the Geological Survey of South West Africa/Namibia. The Survey. 1995.
Taxon identifiers
Nasepia
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