Alemannia, Höver, senonensis zone.
Figure 2 - Aphrocallistes cylindrodactylus.
Teutonia North, Misburg, stobaei/basiplana zone.
Figure 3 - Aphrocallistes cylindrodactylus.
Alemannia, Höver, senonensis zone.
Synonyms:
none
Occurence:
Alemannia, Höver, Lower Campanian (senonensis zone). Rare.
Teutonia, Misburg, Upper Campanian (stobaei zone). Rare.
Individuals of Aphrocallistes cylindrodactylus consist of a central atrium with a wide osculum. The atrium is lined by a kettle- or pouch-like sieve plate. The outer wall has numeros finger-like appendices and protrusions.
The external wall of Aphrocallistes cylindrodactylus is approximately 1 mm thick and is perforated by radial channels (diarhyses), very similar to Aphrocallistes alveolites.
Figures 1 to 3 show three more or less complete individuals of Aphrocallistes cylindrodactylus.
The finger-like protrusions have rounded terminations, except for those by which the sponge is attached to some substrate (e.g. the elongated basal protrusion visible in Figure 2).