Repinaella

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 [1]
Species
R. siberica(Repina in Khomentovskii and Repina, 1965) (Type)
Synonyms
Fallotaspis siberica Repinella siberica

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

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.
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.
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)