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Frae Wikipedia, the free beuk o knawledge
(Reguidit frae Bivalve)

Temporal range: early Cambrian–recent[1][2]
Ernst Haeckel's "Acephala"
"Acephala", frae Ernst Haeckel's Kunstformen der Natur (1904)
Scientific classification e
Kinrick: Animalia
Phylum: Mollusca
Cless: Bivalvia
Linnaeus, 1758

Bivalvia, in previous centuries referred tae as the Lamellibranchiata an Pelecypoda, is a cless o marine an freshwatter molluscs that hae laterally compressed bouks enclosed bi a shell conseestin o twa hinged pairts. Bivalves as a group hae na heid an they lack some uisual molluscan organs lik the radula an the odontophore.


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  1. Jell, Peter A. (1980). "Earliest known pelecypod on Earth — a new Early Cambrian genus from South Australia". Alcheringa: An Australasian Journal of Palaeontology. 4 (3): 233–239. doi:10.1080/03115518008618934.CS1 maint: ref=harv (link)
  2. Runnegar, B.; Bentley, C. (Januar 1983). "Anatomy, ecology and affinities of the Australian early Cambrian bivalve Pojetaia runnegari Jell". Journal of Paleontology. 57 (1): 73–92. JSTOR 1304610.CS1 maint: ref=harv (link)