Dennant, 1902, p. 1

Type Species

H. scriptus Dennant, 1902, p. 1, pl. 1, fig. 1; Monotypy

Type Specimen: Holotype; NMV P27086; Verified; Dry Preserved

Type Locality: Middle Miocene: Muddy Creek, Victoria

Type species best described by Cairns and Parker (1992: 32)



Corallum solitary, small (up to 3.5 mm in GCD), unattached; theca imperforate; costae that correspond to septa quite wide, additional narrow intercostae also present; septa hexamerally arranged in two cycles, the second incomplete,resulting in 10 septa; pali and paliform lobes absent; columella rudimentary.


Differs from Conocyathus by having an imperforate theca and lacking pali.


This genus (and family) was monographed by Cairns (1997), which included a phylogenetic analysis based on morphology; Recent specimens were later reported by Cairns (2004). Only two species are recognized in the genus.


  • Australasia; Oligocene - Miocene
  • Western Pacific; Recent
Recent, South Australia, Victoria, Queensland, 9-414 m. Cairns and Parker, 1992: fig. 9 d, g

This page has been in preparation since 02-Jun-2007 12:36

This version was contributed by Stephen D. Cairns on 18-Nov-2008 20:35.

Page authors are: Stephen D. Cairns Ann Budd. Please contact the editor if you would like to contribute to the diagnosis of this taxon.

The editor is: Stephen D. Cairns

Lateral view of corallum