Disaraea
Fromentel, 1861, p. 245
Type Species
Disaraea cotteaui Fromentel , 1861, p. 245; Subsequent Designation Wells, 1936, p. 108
Type Specimen: Syntype; ?; Lost; Unknown
Type Locality: Oxfordian (Upper Jurassic) from Chatel Censoir (Yonne; France)
This genus has never been figured. Only initial Fromentel's samples were cited.
Classification
Description
(Interpreted from the original description) Phaceloid corallum. Calice exsert. Thin occasional epitheca. Radial elements thin and numerous, pennular and perforate. Synapticule present. Circular fossa in the center. Wall rudimentary or absent.
Remarks
Two nominal species were described by Fromentel (1861) but never used after him (Fromentel 1865). According to Vaughan and Wells (1943), Disaraea would be like Dermoseris but with an extratentacular budding. The Fromentel's text (the only thing we have) explains that the budding of D. cotteaui occurs at the edge of the calice or on the calice itself. Then Disaraea is potentially a senior synonym of Dermoseris. As it has never been used for other samples than those of Fromentel, it is preferable to keep this genus into oblivion.
Distribution
- Western Europe; Late Jurassic
This page has been in preparation since 18-Aug-2009 16:44
This version was contributed by Bernard Lathuilière on 08-Mar-2014 11:02.
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
|