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Species Crassatella lyellii Sowerby 1846


Discussion / Comments:
Griffin & Nielsen (2008):
TYPE MATERIAL. Holotype: NHM-L27967. REMARKS. The holotype figured by Sowerby (1846, pl. 2, fig. 10) is a very weakly inflated articulated pair. Topotypic material from Santa Cruz indicates that this species fits well in Spissatella Finlay, 1926 [type species Crassatella trailli Hutton, 1873]. It is far less complete than suggested by Sowerby’s figure. A well preserved specimen from the mouth of the Santa Cruz River was figured by del Río (2004b).
Synonym list:
Griffin & Nielsen (2008):
1846 Crassatella lyellii Sowerby. - Sowerby : p.249 pl. 2; fig. 10
1900 Crassatella n sp. quarta . - Ortmann : p.371
1902 Crassatellites quartus Ortmann. - Ortmann : p.124 pl. 27; fig. 1
1907 Crassatella lyellii Sowerby. - Ihering : p.278
2004 Spissatella lyellii Sowerby. - del Rio : fig. 10.13, 10.14
2008 Spissatella lyellii Sowerby. - Griffin & Nielsen : pl. 7; fig. 3-4
References:

Sowerby,G.B.. (1846):
Descriptions of Tertiary fossil shells from South America..
In: Geological observations on South America. Eds: Darwin, C.. p. 249-264

Ortmann,A.E.. (1900):
Synopsis of the Collections of Invertebrate fossils made by the Princeton Expedition to Southern Patagonia . American Journal of Science, Fourth Series Vol. 10 p. 368-381

Ortmann,A.E.. (1902):
Tertiary invertebrates: Reports of the Princeton Expedition to Patagonia, 1896–1899. Vol. 4(2) p. 45-332

Ihering,H.. (1907):
Les mollusques fossiles du Tertiaire et du Crétacé Supérieur de l’Argentine . Anales del Museo Nacional de Buenos Aires 3/7 p. 611

del Rio,C.J.. (2004):
Tertiary marine molluscan assemblages of eastern Patagonia (Argentina): a biostratigraphic analysis . Journal of Paleontology Vol. 78 p. 1097-1122

Griffin,M.. and Nielsen,S.N.. (2008):
A revision of the type specimens of Tertiary molluscs from Chile and Argentina described by d’Orbigny (1842), Sowerby (1846), and Hupé (1854) . Journal of Systematic Palaeontology
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