Three-horn Wartyback
Obliquaria reflexa
Diagnostics 5
SHELL
- size: small, maximum 55 mm. most under 40 mm
- thickness: thick to very thick
- shape: overall circular, with squared/angular posterior and rounded anterior. posterior ridge pronounced
- width: moderately inflated
- surface: mid-shell row of prominent 3-5 large flattened knobs, in alternating positions on each valve. ribbing on posterior slope close to hinge
- beaks: elevated, pointed and curved inwards. sculptures: knobby, much like rest of shell.
- color/markings: greenish, tan or brown, occasionally with thin green rays
- sexual dimorphism: none
- pseudocardinal teeth: massive, deeply serrated
- lateral teeth: short, sharply angled with pseudocardinals
- nacre: white, irridescent in posterior
Soft parts: foot white
Similar species/lookalikes: easily identified by the single row of few, large alternating knobs in mid-shell, which is diagnostic for the taxon. it resembles the mapleleaf Quadrula quadrula, but that species has a second row of nodules located on the posterior ridge.
Sources and Credits
- (c) Philippe Blais, some rights reserved (CC BY-NC-ND), uploaded by Philippe Blais
- (c) Brian Wulker, some rights reserved (CC BY-NC), uploaded by Brian Wulker
- (c) Michael Gras, M.Ed., some rights reserved (CC BY), uploaded by Michael Gras, M.Ed., http://www.flickr.com/photos/mikegras/9412585656/
- (c) Michael J. Gras, M.Ed., some rights reserved (CC BY), uploaded by Michael J. Gras, M.Ed.
- Adapted by Philippe Blais from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Obliquaria_reflexa
