page_title: Minchinellidae
section_title: Description
hierarchical_section_title: Minchinellidae / Description
caption_attribution_description: Deutsch: versteinertes Fossil eines kugeligen Kalkschwammes ("Porosphaera Globularis") mit Anhaftungsstelle aus Privatsammlung, Fundort: alter Teichaushub aus der "Rethener-Meiner Oberkreidemulde" in Rethen (Vordorf), Landkreis Gifhorn, Deutschland
context_page_description: Minchinellidae is a family of calcareous sponges in the order Calcarea. It is the only family in the monotypic class Lithonida.
context_section_description: Calcaronea with reinforced skeleton
  consisting either of linked or cemented basal actines of
  tetractines, or of a rigid basal mass of calcite. Diapason
  spicules are generally present and the canal system is
  leuconoid.
caption: Porosphaera globularis fossil from Cretaceous rocks in Germany
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