Middle Cenomanian coral fauna from the Rosssteinalmen (Northern Calcareous Alps, Bavaria, Southern Germany) - a revised and extended version Author Loeser, Hannes Estacion Regional del Noroeste, Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Blvd. Luis Donaldo Colosio S / N y Madrid, 83250 Hermosillo, Sonora, Mexico Author Werner, Winfried SNSB - Bayerische Staatssammlung fuer Palaeontologie und Geologie and GeobioCenterLMU, Richard-Wagner-Strasse 10, D- 80333 Muenchen, Germany werner@snsb.de Author Darga, Robert Naturkunde- und Mammut-Museum Siegsdorf, Auenstrasse 2, D- 83313 Siegsdorf, Germany text Zitteliana 2023 2023-12-20 97 89 147 http://dx.doi.org/10.3897/zitteliana.97.113796 journal article http://dx.doi.org/10.3897/zitteliana.97.113796 2747-8106-97-89 D456441932134D3896BBE7CFE157E0F8 0B2F9DF86A615518B1D44DBB56689406 Polyastropsis Alloiteau, 1957 Type species. Polyastropsis arnaudi Alloiteau, 1957. Description. Thamnasterioid-cerioid colony. Corallite outline irregular with corallite centres slightly depressed. Symmetry of septa irregular. Costae confluent or sub-confluent. Synapticulae occasional, mainly in the space between corallites. Columella consists of isolated trabeculae or one more solid element. Wall subcompact, made of synapticulae. Polyastreopsis differs from Thalamocaeniopsis by a poorly defined corallite outline, and a more incomplete wall.