Quadrula

Quadrula is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae native to rivers of the American Midwest and mid-south. All have thick nacreous shells with well-developed hinge teeth, many also with external shell sculpturing of nodules or lumps.

Quadrula
Quadrula fragosa
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionida
Family: Unionidae
Genus: Quadrula
Rafinesque, 1820

Species within the genus Quadrula

In 2012, many species classified as Quadrula were moved to Rotundaria and Theliderma based on genetic and morphological evidence.[1] Species currently in Quadrula now consist of:[2]

Quadrula verrucosa
  • Quadrula apiculata (Southern mapleleaf)
  • Quadrula fragosa (Winged mapleleaf)
  • Quadrula nobilis (Gulf mapleleaf)
  • Quadrula quadrula (Mapleleaf)
  • Quadrula rumphiana (Ridged mapleleaf)
  • Quadrula verrucosa (Pistolgrip)


gollark: In any case, if you nitpick some aspect of a statement, I have every right to metanitpick.
gollark: For your information, I have perfectly functional NTP synchronisation to within about 0.1 seconds on my servers.
gollark: Not *exactly*. There is a nonzero chance that you somehow completely failed to notice that it had an 8 on it and it lands on that, or that the dice is somehow swapped out for one with 8s on it as you roll it, or that sort of thing.
gollark: But I want them to implement self replicating spreadsheet cells to run some weird cellular automaton to run a Turing machine to parse HTML.
gollark: I don't know if it has HTTP capability, but it could totally sort of do HTML/CSS if it is.

References
  1. Campbell, David; Lydeard, Charles (2012). "The Genera of Pleurobemini (Bivalvia: Unionidae: Ambleminae)". American Malacological Bulletin. 30 (1): 19–38.
  2. Quadrula World Register of Marine Species


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.