Beauvais, 1976, p. 68

Type Species

Montlivaltia simplex Duncan, 1867a, p. 9 pl. 3 fig. 16-17; Original Designation

Type Specimen: Lectotype; 249; Not Traced; Unknown

Type Locality: Hettangian (Lower Jurassic) from Brocastle (Glamorgan S. Wales)

The type specimen is a lectotype by inference of a holotype (art 74 b) in Beauvais 1976. It was described and figured in Beauvais 1976 and preserved in the Moore's collection (Bath).



Dendroid corallum with subcylindrical corallites. Epitheca reaching the cutting calicular edge. Locally some costae visible. Calicular platform weakly depressed. Radial elements compact, free, straight (short), curved, sinuous to bent, unequal. Distal edge beaded and scalloped. Lateral faces wrinkled. Each wrinkle bears parallel rows of fines granules perpendicular to the distal edge. Microstructure unknown. Radial and bilateral symmetry. Endotheca abundant. Columella absent.


Duncan described the type-specimen as a solitary form but Beauvais discovered a second corallite after polishing the lower surface. Two nominal species were attributed to this genus. P. suttonensis (Duncan) initially placed in the genus Thecosmilia was subsequently re-classified in the genera Phacelostylophyllum by Prinz 1991 and Simms et al 2002 and Phacellophyllia by Kiessling et al 2009.


  • Western Europe; Early Jurassic
  • Southern Europe; Early Jurassic
  • South America; Early Jurassic

This page has been in preparation since 19-Aug-2009 16:48

This version was contributed by Bernard Lathuilière on 14-Mar-2013 15:18.

Page authors are: Bernard Lathuilière. Please contact the editor if you would like to contribute to the diagnosis of this taxon.

The editor is: Bernard Lathuilière

Lectotype of M. simplex, the type species of the genus Phacelepismilia
Lectotype of M. simplex, the type species of the genus Phacelepismilia
Original Duncan's figure of the type specimen of the type species of Phacelepismilia