Ramonalinidae is an extinct family of marine bivalve molluscs from the late Anisian (early Middle Triassic). It was an edgewise-recliner with a flattened anteroventral surface (on which it rested) and partially fused valves. They formed distinctive mud mounds.[2]
Taxonomy
- Ramonalina is thus far the only known genus.[2]
References
- ^ A Synoptical Classification of the Bivalvia (Mollusca)
- ^ a b Yancey, T.E.; Wilson, M.A.; Mione, A.C.S. (2009). "The Ramonalinids: a new family of mound-building bivalves of the Early Middle Triassic". Palaeontology. 52 (6): 1349–1361. doi:10.1111/j.1475-4983.2009.00908.x.