Alloiteau, 1957, p. 113
Axosmiliopsis Alloiteau, 1957, p. 113 is a junior synonym (available and invalid), see Plesiophyllum Alloiteau, 1952, p. 605.
Montlivaltia fritillus Fromentel de and Ferry de, 1869, p. 143, pl. 24 fig. 1 non fig. 1a; Original Designation
Type Specimen: Lectotype; MNHN M03533; Verified; Dry Preserved
Type Locality: Pliensbachian of May sur Orne (Calvados, France)
The name-bearing type is a lectotype despite it is named holotype by Alloiteau 1957 It is a unique sectioned specimen and 2 transverse acetate peels
Solitary corallum cemented on a wide attachment area. Circular calice. Deep calicular platform with an elliptical axial pit. "Archeothecal" wall, externally smooth or very thin vertical striations. Radial elements are compact poorly ornamented septa with parallel faces. Lateral faces smooth.They are straight but my become more tortuous in the axial region. Microstructure not preserved but an important development of laminar layers is presumed from the relation with endotheca. Probable hexameral arrangement. Abundant subtabular endotheca made of some rather thick dissepiments extending on a great part of interseptal chambers and sloping down to the axial region. Wide calicular axial pit, septa free in distal region, but anastomosed in depth. No columella, no palus, no synapticule.
Only one specimen is known.
- Western Europe; Early Jurassic
This page has been in preparation since 07-May-2009 07:32
This version was contributed by Bernard Lathuilière on 21-Jan-2012 10:42.
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