Palocyathus

Filkorn, 1994, p. 57

Type Species

P. seymourensis Filkorn, 1994, p. 57, fig. 19; Original Designation

Type Specimen: Holotype; USNM 93050; Verified; Dry Preserved

Type Locality: Late Cretaceous: Seymour Island, Antarctic Peninsula

Classification

• Family: Turbinoliidae Milne Edwards and Haime, 1848

Diagnosis

Corallum trochoid, with pointed base and circular cross section; GCD up to 7 mm; theca imperforate, but exteriorly pitted; costae beaded or serrate, originating by trifurcation; septa hexamerally arranged in 4 cycles; P2 and P3 present, usually fuse with a system; columella papillose.

Comparisons

Similar but differs from Bothrophoria in having P2-3, not P1-3.

Remarks

This genus and family was monographed by Cairns (1997), which included a phylogenetic analysis based on morphology. The genus is monotypic and thus far is known only from the original description.

Distribution

• Antarctica; Late Cretaceous

This page has been in preparation since 10-Jan-2008 20:24

This version was contributed by Stephen D. Cairns on 18-Nov-2008 20:16.

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: Rosemarie Baron-Szabo