Mimetaster

Mimetaster is a Devonian marrellomorph known from the Lower Devonian Hunsrück Slate,[1] and is the most common arthropod (trilobites excluded) from the locality, known from over 100 specimens including three juveniles.[2] The animals probably lived in small groups.[2]

Mimetaster
Temporal range: Lower Devonian
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: †Marrellomorpha
Order: †Marrellida
Family: †Mimetasteridae
Genus: Mimetaster
Gürich, 1932
Type species
Mimetaster hexagonalis
Gürich 1931
Species
  • M. florestaensis Aris et al. 2017
  • M. hexagonalis Gürich 1931 (type)

Mimetaster florestaensis is characterized by three pairs of principal spines, as well as strong secondary spines in the proximal two-thirds of the anterolateral spines. It was found in the Tremadocian Floresta Formation of Argentina, the first occurrence of this group in South America.

Full-color live reconstruction of Mimetaster hexagonalis.

References
  1. Stürmer, W; Bergström, J (1976). "The arthropods Mimetaster and Vachonisia from the Devonian Hunsrück Shale". Paläontologische Zeitschrift. 50 (1): 78–111. doi:10.1007/bf03001974.
  2. Kühl, G.; Rust, J. (2010). "Re-investigation of Mimetaster hexagonalis: a marrellomorph arthropod from the Lower Devonian Hunsrück Slate (Germany)". Paläontologische Zeitschrift. 84: 397. doi:10.1007/s12542-009-0049-x.


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