Trematotrochus
Tenison-Woods, 1879, p. 59
Type Species
Conocyathus fenestratus Tenison-Woods, 1878, p. 188, no fig.; Monotypy
Type Specimen: Syntype; MAMU F420, F1698; Verified; Dry Preserved
Type Locality: Middle Miocene (Balcombian): Muddy Creek, Victoria
Classification
Synonyms
Diagnosis
Corallum ceratoid, with a pointed base and circular in cross section; GCD less than 4.5 mm; theca perforate; costae granular, originating by trifurcation; septa hexamerally arranged in 3-4 cycles; one crown of 6 small P2; columella rudimentary/papillose.
Comparisons
Unique in having a truly perforated theca.
Remarks
This genus and family was monographed by Cairns (1997), which included a phylogenetic analysis based on morphology. Seven species, only two Recent, listed by Cairns (1997).
Distribution
- Australasia; Eocene
- Australasia; Miocene
- Western Pacific; Recent
- Western Atlantic; Recent
Recent: 150-576 m; FIGURES: Cairns 1997: figs. 3h, 6g, 10a (pores)This page has been in preparation since 18-Jul-2008 18:32
This version was contributed by Stephen D. Cairns on 19-Nov-2008 20:39.
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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