Orbigny, 1849, p. 8

Type Species

Lithodendron dianthus Goldfuss 1826 p. 45; Monotypy

Type Specimen: Lectotype; IPB 160; Verified; Dry Preserved

Type Locality: Upper Jurassic Giengen (Germany)

The lectotype is a unique sample not sectionned . Unfortunately the preparation to reveal the columella was not accepted.



Typically phaceloid corallum, (but the lectotype is a young colony in some part cerioid, in some part plocoid but quasi-phaceloid) Extracalicular increase. Corallite distinct, regularly folded epitheca s. l. Radial elements are typically compact free bicuneiform and straight but sometimes externally flexuous. When the cerioid or the plocoid situation occurs, costae are subconfluent and show a torsion. Lateral ornamentation with small granules, distal edge not dentate. Septal apparatus clearly hexameral. Deep and large axial fossa with a lamellar columella emerging from the floor. Endotheca made of dissepiments sloping down to the center. The wall is peripheral and corresponds neither to the thickest region of costosepta nor the highest part of the endotheca. No synapticule, no palus.


12 nominal species known in Jurassic 3 in Cretaceous.


  • Western Europe, Southern Europe, Central Europe, Eastern Europe, Subsaharan Africa, South Asia, Central America; Late Jurassic - Late Cretaceous

This page has been in preparation since 19-Aug-2009 16:55

This version was contributed by Bernard Lathuilière on 18-Jun-2011 11:00.

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 the type species of Placophyllia
specimen of Placophyllia dianthus
specimen of Placophyllia dianthus
specimen of Placophyllia dianthus

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