| Cassianellidae Temporal range: Landinian - Norian
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Pteriida |
| Superfamily: | Pterioidea |
| Genus: | †Cassianellidae Ichikawa, 1958 |
| Genera | |
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Cassianellidae is a small extinct family of prehistoric bivalves which lived from the Middle Triassic, Ladinian stage through the Late Triassic Norian stage.[1] It has been suggested that the family may have evolved from the related family Bakevelliidae.[2] Bakevelliidae species are found in North America, South America, Europe, the Middle East, and Asia. Living a stationary life attached to substrate in marine and brackish environments, they formed shells of an aragonite composition with a low amount of magnesium calcite. The family Cassianellidae was named by K. Ichikawa in 1958.[1]
- ^ a b The Paleobiology Database Cassianellidae entry accessed 2 January 2012
- ^ Malchus, N. (2004). "Early ontogeny of Jurassic bakevelliids and their bearing on bivalve evolution" (PDF). Acta Palaeontologica Polonica. 49 (1): 85–110.
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