Sphenotrochus
Milne Edwards and Haime, 1848, p. 240
Type Species
Turbinolia crispa Lamarck, 1816, p. 31, no fig.; Subsequent Designation Milne Edwards and Haime, 1850, p. xvi
Type Specimen: Holotype; ; Not Traced; Dry Preserved
Type Locality: Eocene: sille de Grignon, France
Types not traced but probably in Lamarck Collection at MNHN, Paris
Classification
Synonyms
Diagnosis
Corallum cuneiform, with a rounded base or one with costal spurs (“fishtails”) and a calice elliptical in cross section; GCD up to ; GCD up to 10 mm; theca imperforate; costae independent, smooth to finely granular, often discontinuous; septa hexamerally arranged in 3-4 cycles; pali absent; columella lamellar.
Comparisons
See Turbinolia
Remarks
This genus and family was monographed by Cairns (1997), which included a phylogenetic analysis based on morphology. Thirty-six species, including about 14 Recent, listed by Cairns (1997).
Distribution
- Western Europe; Eocene
- Polynesia; Eocene
- North America; Eocene
- Western Europe; Oligocene
- Western Europe; Miocene
- Australasia; Miocene
- Caribbean; Miocene
- Western Europe; Pliocene
- Australasia; Pliocene
- Indian Ocean; Recent
- Western Pacific; Recent
- Central Pacific; Recent
- Eastern Pacific; Recent
- Western Atlantic; Recent
- Eastern Atlantic; Recent
- Mediterranean; Recent
- Subantarctic and Antarctic; Recent
Recent: 7-403 m; FIGURES: Cairns, 1997: figs. 3j. 6a, 8hThis page has been in preparation since 18-Jul-2008 20:29
This version was contributed by Stephen D. Cairns on 19-Nov-2008 20:23.
Page authors are: Stephen D. Cairns. Please contact the editor if you would like to contribute to the diagnosis of this taxon.
The editor is: Stephen D. Cairns
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