Conocyathus
Orbigny, 1849, p. 5
Not Madrepora (Conocyathus) Brook, 1893: 160 (=Acropora).
Type Species
C. sulcatus d'Orbigny, 1849, p.5, no fig; Monotypy
Type Specimen: Holotype; ; Lost; Unknown
Type Locality: Early Oligocene: Germany
Classification
Synonyms
Diagnosis
Corallum ceratoid, with a rounded base and circular in cross section; GCD up to 3.5 mm; theca imperforate but deeply pitted exteriorly; costae independent and finely granular, twice as many as septa; septa hexamerally arranged in 3 cycles; one crown of 6 P2; columella rudimentary or absent.
Comparisons
Differs from Turbinolia in lacking a columella and in having fewer external thecal pits (see Cairns, 1997: 22 for discussion).
Remarks
This genus and family was monographed by Cairns (1997), which included a phylogenetic analysis based on morphology. Eleven species, only 3 known from the Recent (see Cairns, 1998, 2004). Filkorn (1994) reviewed the fossil species.
Distribution
- North Africa; Paleocene
- Polynesia; Paleocene
- Australasia; Eocene - Miocene
- Western Europe; Oligocene
- Indian Ocean; Recent
- Western Pacific; Recent
Recent: 4-367 m Cairns 1997: figs. 3a, 5j, 8b (pits)This page has been in preparation since 18-Jul-2008 18:29
This version was contributed by Stephen D. Cairns on 18-Nov-2008 20:37.
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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