unioid

comparative more unioid · superlative most unioid

1. rareResembling or characteristic of the unios.

plural unioids

1. rareSynonym of unionoid.

   Species of the oldest freshwater bivalve genus, the unioid Archanodon, are well known from Frasnian strata in New York State (Bridge et al. 1986).

   1996, George R. McGhee, Jr., “Victims and Survivors”, in The Late Devonian Mass Extinction: The Frasnian/Famennian Crisis (Critical Moments in Paleobiology and Earth History Series), New York, N.Y.: Columbia University Press, →ISBN, page 84

   2 more examples

   Thirty-five bivalve taxa from the Hells Canyon locality are discussed. Of these, seven are new: the mytilid Mysidiella cordillerana n. sp., the limacean Antiquilima vallieri n. sp., the true oyster Liostrea newelli n. sp., the pectinacean Crenamussium concentricum n. gen. and sp., the unioid Cardinioides josephus n. sp., the trigoniacean Erugonia canyonensis n. gen. and sp., and the carditacean Palaeocardita silberlingi n. sp.

   1987 July, Cathryn R. Newton, Michael T. Whalen, Joel B. Thompson, Nienke Prins, David Delalla, “Systematics and Paleoecology of Norian (Late Triassic) Bivalves from a Tropical Island Arc: Wallowa Terrane, Oregon”, in Journal of Paleontology, volume 61, number S22 (Paleontological Society Memoir 22), Tulsa, Okla.: Society of Economic Paleontologists and Mineralogists, →DOI, →ISSN, →OCLC, page 1

   Large unioids like Anodonta, Unio and Hyridella are sometimes abundant in well-mixed macrophyte-dominated lakes and can filter the entire water volume in 1.5–3 days (Ogilvie & Mitchell, 1995).

   2002, Erik Jeppesen, Ilkka Sammalkorpi, “Lakes”, in Martin R. Perrow, Anthony J. Davy, editors, Handbook of Ecological Restoration, volume 2 (Restoration in Practice), Cambridge, Cambridgeshire: Cambridge University Press, →ISBN, part 2 (The biomes), page 308, column 2

   Synonyms: unionoid