Soehle, 1899, p. 86
Hydnophoropsis Soehle, 1899, p. 86 is a junior synonym (available and invalid), see Placohelia Pocta, 1887, p. 49.
Hydnophoropsis thecalis Soehle, 1899, p. 86, pl. 4, figs. 2-3; Original Designation Soehle, 1899, p. 86
Type Specimen: Holotype; ; Not Traced; Unknown
Type Locality: Upper Cretaceous (Cenomanian) of Germany (Sefelwandalm, Ammergebirge).
The syntypes of the type species are housed at BSPG (Munich) under 1899/XX/3.
Recently, a paper was published by Löser (2013) on the genus Hydnophoropsis SÖHLE, 1899. In this paper he states that of the original two syntypes of the type species of this genus (H. thecalis Söhle, 1899, Pl. IV, Figs. 2 and 3), only one syntype was available and that from it a thin section (having the inventory number BSPG 1899 A 3) had been prepared [Löser, 2013, p. 24: “Recently, from the only available syntype a thin section was prepared.”]. In addition, according to him, this genus belonged to the placocoeniids and was characterized by features such as 1) a plocoid colony; 2) septal microstructure consisting of medium size trabeculae; 3) costae present, short, non-confluent; 4) wall present, compact, septothecal; 5) coenosteum broad, consists of costae, trabeculae, and exothecal dissepiments; and 6) budding extracalicular. Based on this diagnosis, he considered the genus Paraplacocoenia M. Beauvais, 1982, as a junior synonym of Hydnophoropsis and, in addition, transferred specimens to the latter genus that have been assigned to species of the genera Agathelia, Favia, Neocoenia, Phyllocoenia, Phyllocoeniopsis, Placocaeniopsis, and Placocoenia. However, investigations by Baron-Szabo (2009-2015) revealed that the only available thin section of this genus was prepared at the turn of the 20th century (and not recently). Also, the curator of the material of Hydnophoropsis Söhle which is housed at the Bavarian State Collection (Dr. Winfried Werner) has repeatedly confirmed that no other thin sections have been made. Furthermore, the inventory number “BSPG 1899 A 3” (as given in Löser, 2013, p. 25, 31, and in the plate caption of Plate 3, Figs. 1-2, supposedly representing the syntype of the type species of H. thecalis) is unknown to Dr. Werner. In addition, the images of the thin section presented in Löser (2013, Pl. 3, Figs. 1-2) as the syntype of H. thecalis Söhle show colony parts that cannot be matched with the structures present in the thin section of the syntype housed at the Bavarian State Collection. The type material of Hydnophoropsis thecalis Söhle, 1899, has the inventory BSPG 1899 XX 3. In addition, the type material of Hydnophoropsis Söhle consists of both the above mentioned thin section and a hand specimen. The label on the thin section clearly refers to the syntype of H. thecalis Söhle figured in Söhle (1899, pl. IV, Fig. 2) and the label of the hand specimen clearly indicates that it represents the second syntype that was originally figured in Söhle (1899, pl. IV, Fig. 3). Therefore, the statement in Löser (2013) that only one syntype was available is incorrect. In addition, based on features seen in both of the syntypes such as 1) intracalicular budding in various places; 2) confluent septa in various places; and 3) corallites that are not only in plocoid, but also subcerioid and submeandroid integration, the syntypes of the type species of the genus Hydnophoropsis SÖHLE, 1899, differ from all taxa included by Löser (2013) in the genus. In addition, both syntypes show septa that consist of branching trabeculae having numerous secondary trabeculae, which are typical of the rhipidogyrids, thus differing from the placocoeniids. Therefore, the genus Hydnophoropsis SÖHLE, 1899, is grouped with the family Rhipidogyridae. Regarding the genus Paraplacocoenia M. Beauvais, 1982, and the species of Agathelia, Favia, Neocoenia, and Placocoenia concerned, previously proposed models (Baron-Szabo, 2006 and 2014) are followed.
- Central Europe; Late Cretaceous
This page has been in preparation since 27-Aug-2010 17:04
This version was contributed by Rosemarie Baron-Szabo on 04-Dec-2015 23:58.
Page authors are: Rosemarie Baron-Szabo. Please contact the editor if you would like to contribute to the diagnosis of this taxon.
The editor is: Rosemarie Baron-Szabo