Mimetaster

Mimetaster; Temporal range: Lower Devonian PreꞒ Ꞓ O S D C P T J K Pg N
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 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 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.

References

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.
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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[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.

[Kühl2010-2] 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.