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Repinaella; Temporal range: Lower Cambrian (Atdabanian) PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Trilobita
Order:	Redlichiida
Suborder:	Olenellina
Superfamily:	”Fallotaspidoidea”
Genus:	Repinaella; Geyer, 1996
Species
	R. siberica(Repina in Khomentovskii and Repina, 1965) (Type);
Synonyms
	Fallotaspis siberica; Repinella siberica

Repinaella

Last updated November 12, 2025

Repinaella is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the late Atdabanian stage.

Distribution

Repinaella siberica has been found in the Lower Cambrian of Siberia (Pestrotsvet Formation, Lena River).^[2]
cf. Repinaella sp., the first trilobite to appear in Laurentia, has been reported from the Lower Cambrian of Nevada (Northern Clayton Ridge; Andrew Mountain Member of the Montezuma Range, Campito Formation). The occurrence of cf. Repinaella is approximately correlative with the earliest trilobites in Siberia and western Gondwana.^[2]

Taxonomy

Within the "Fallotaspidoidea" superfamily Repinaella siberia is closest to the common ancestor with the other Olenellina, particularly Pseudojudomia egregia , and the common characters of these two species were probably shared with the common ancestor of all trilobites.^[3]

References

↑ Jell, P.A.; Adrain, J.M. (2002). "Available generic names for trilobites" (PDF). Memoirs of the Queensland Museum. 48 (2): 331–553. ISSN 0079-8835.
1 2 Hollingsworth, J.S. (2005). "The earliest occurrence of trilobites and brachiopods in the Cambrian of Laurentia". Palaeogeography, Palaeoclimatology, Palaeoecology. 220 (1–2): 153–165. Bibcode:2005PPP...220..153S. doi:10.1016/j.palaeo.2004.08.008. Archived from the original on 2014-06-06.
↑ Lieberman, B.S. (2002). Phylogenetic analysis of some basal early Cambrian Trilobites, the biogeographic origins of the Eutrilobites, and the timing of the Cambrian radiation. Vol. 76. pp. 692–708. doi:10.1666/0022-3360(2002)076<0692:paosbe>2.0.co;2. ISBN 9780444520654.{{cite book}}: |journal= ignored (help)

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[1] Jell, P.A.; Adrain, J.M. (2002). "Available generic names for trilobites" (PDF). Memoirs of the Queensland Museum. 48 (2): 331–553. ISSN 0079-8835.

[Hollingsworth-2] 1 2 Hollingsworth, J.S. (2005). "The earliest occurrence of trilobites and brachiopods in the Cambrian of Laurentia". Palaeogeography, Palaeoclimatology, Palaeoecology. 220 (1–2): 153–165. Bibcode:2005PPP...220..153S. doi:10.1016/j.palaeo.2004.08.008. Archived from the original on 2014-06-06.

[Lieberman_2002-3] Lieberman, B.S. (2002). Phylogenetic analysis of some basal early Cambrian Trilobites, the biogeographic origins of the Eutrilobites, and the timing of the Cambrian radiation. Vol. 76. pp. 692–708. doi:10.1666/0022-3360(2002)076<0692:paosbe>2.0.co;2. ISBN 9780444520654.{{cite book}}: |journal= ignored (help)

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Repinaella

Contents

Distribution

Taxonomy

References