Thrypticotrochus
Cairns, 1989, p. 37
Type Species
T. multilobatus Cairns, 1989, p. 37, pl. 19b-g; Original Designation
Type Specimen: Holotype; USNM 81901; Verified; Dry Preserved
Type Locality: Recent; Sulu Archipelago, 507 m (Albatross-5576)
Paratypes also deposited at USNM, AM, and MNHN (see Cairns, 1989); type species well described by Cairns (1989). (=T. petterdi (Dennant, 1906)
Classification
Diagnosis
Corallum ceratoid, circular in cross section, and with a pointed base, base often irregularly shaped due to asexual fragmentation; up to 6 mm in GCD; theca imperforate; costae serrate, originating by trifurcation; septa hexamerally arranged in 4 or more cycles (up to 72 septa); multiple paliform lobes on all but last cycle of septa; columella papillose.
Comparisons
See account of Levicyathus
Remarks
This genus and family was monographed by Cairns (1997), which included a phylogenetic analysis based on morphology. Monotypic (Cairns, 2004). The genus appears to be unique in the family in its predominant form of asexual reproduction.
Distribution
- Indian Ocean; Recent
- Western Pacific; Recent
Recent: 95-925 m Cairns 1997: 2h, 5b, Cairns 1989: fig. 19c (holotype)This page has been in preparation since 18-Jul-2008 18:25
This version was contributed by Stephen D. Cairns on 18-Nov-2008 20:22.
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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