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Species Turritella ambulacrum Sowerby 1846

Discussion / Comments:
Griffin & Nielsen (2008):
TYPE MATERIAL. Five syntypes: NHM-G26359, NHM-G26360 NHM-G26361, NHM-G26362, NHM-G26363 (Santa Cruz). REMARKS. Sowerby mentioned also San Julián as a locality for this species (the figured specimen is presumably from Santa Cruz), but it remains unclear from what horizon it comes. South American turritellids are badly in need of revision, so the generic placement – while certainly not Turritella s.s. – must remain uncertain at present. The other species described by Sowerby from Chile, Turritella suturalis (= T. pseudosuturalis d’Orbigny, 1852), seems to be distinct.
Synonym list:
Griffin & Nielsen (2008):
1846 Turritella ambulacrum Sowerby. - Sowerby : p.257 pl. 3; fig. 59
? 1999 Turritella ambulacrum Sowerby. - Frassinetti & Covacevich : p.45 pl. 9; fig. 8
2008 "Turritella" ambulacrum Sowerby. - Griffin & Nielsen : pl. 18; fig. 3
Was used in synonym list of:
Turritella suturalis Sowerby 1846

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

Frassinetti,D.. and Covacevich,V.. (1999):
Invertebrados fosiles marinos de la Formacion Guadal (Oligoceno superior-Mioceneo inferior) en Pampa Castillo, region de Aisen, Chile Translated Title: Invertebrate marine fossils from the Guadal Formation (upper Oligocene-lower Miocene) at Pampa Castillo, Aisen region, Chile.. Vol. 51 p. 96

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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