MolluscaBase name details
Crassatellites (Crassatellites) altaspissus Woodring, 1925 †
1698599 (urn:lsid:marinespecies.org:taxname:1698599)
unaccepted > superseded combination
Species
Crassatellites (Crassatellites) Krüger, 1823 † represented as Crassatellites Krüger, 1823 † accepted as Crassatella Lamarck, 1799
marine, brackish, fresh, terrestrial
fossil only
Woodring, W. P. (1925). Miocene mollusks from Bowden Jamaica. Pelecypods and scaphopods. <em>Carnegie Institution of Washington Publication.</em> 366: 1-222, pls. 1-28., available online at https://www.biodiversitylibrary.org/page/59239218
page(s): 95, Plate 11, figures 16, 17 [details]
page(s): 95, Plate 11, figures 16, 17 [details]
Original description Shell medium-sized, heavy, moderately inequilateral; posterior margin obliquely truncated, base slightly emarginate in...
Original description Shell medium-sized, heavy, moderately inequilateral; posterior margin obliquely truncated, base slightly emarginate in front of posterior ridge; umbos high, incurved, the apex flattened; escutcheon slightly wider and longer than lunule, both moderately depressed; posterior ridge low; a lower and broader ridge extends from the umbo to the upper edge of the posterior truncation; sculpture consisting of 9 concentric undulations in the umbonal region, the ventral few slightly crowded; on the anterior slope finer concentric undulations extend almost half of distance from umbo to ventral margin, remainder of shell smooth except for incrementals; hinge high, massive, the right posterior cardinal (3b) absent; inner margin of valve smooth. Length 61mm; height 45mm; diameter (right valve) 18mm. This species, which is based on an adult right valve and a young right valve, closely resembles C. densus Dall, described from the Oak Grove sand of Florida, but is proportionally higher, more convex and has a more excavated posterior dorsal margin, longer posterior truncation, and more numerous and finer umbonal concentric undulations. The undulations on the anterior slope of C. altaspissus are coarser, but the change from one series to the other is not as abrupt as on C. densus. C. altaspissus is distinguished from C. jamaicensis by its more elongate outline, more excavated posterior dorsal margin, and by the presence of concentric undulations on only the upper half or less of the anterior slope. It has essentially the same outline as the Miocene species from Panama and Costa Rica called C. reevei by Olsson, but does not have concentric rugae on the anterior part of the shell. [details]
MolluscaBase eds. (2024). MolluscaBase. Crassatellites (Crassatellites) altaspissus Woodring, 1925 †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1698599 on 2024-04-29
The webpage text is licensed under a Creative Commons Attribution 4.0 License
original description
Woodring, W. P. (1925). Miocene mollusks from Bowden Jamaica. Pelecypods and scaphopods. <em>Carnegie Institution of Washington Publication.</em> 366: 1-222, pls. 1-28., available online at https://www.biodiversitylibrary.org/page/59239218
page(s): 95, Plate 11, figures 16, 17 [details]
page(s): 95, Plate 11, figures 16, 17 [details]
From editor or global species database
Original description Shell medium-sized, heavy, moderately inequilateral; posterior margin obliquely truncated, base slightly emarginate in front of posterior ridge; umbos high, incurved, the apex flattened; escutcheon slightly wider and longer than lunule, both moderately depressed; posterior ridge low; a lower and broader ridge extends from the umbo to the upper edge of the posterior truncation; sculpture consisting of 9 concentric undulations in the umbonal region, the ventral few slightly crowded; on the anterior slope finer concentric undulations extend almost half of distance from umbo to ventral margin, remainder of shell smooth except for incrementals; hinge high, massive, the right posterior cardinal (3b) absent; inner margin of valve smooth. Length 61mm; height 45mm; diameter (right valve) 18mm. This species, which is based on an adult right valve and a young right valve, closely resembles C. densus Dall, described from the Oak Grove sand of Florida, but is proportionally higher, more convex and has a more excavated posterior dorsal margin, longer posterior truncation, and more numerous and finer umbonal concentric undulations. The undulations on the anterior slope of C. altaspissus are coarser, but the change from one series to the other is not as abrupt as on C. densus. C. altaspissus is distinguished from C. jamaicensis by its more elongate outline, more excavated posterior dorsal margin, and by the presence of concentric undulations on only the upper half or less of the anterior slope. It has essentially the same outline as the Miocene species from Panama and Costa Rica called C. reevei by Olsson, but does not have concentric rugae on the anterior part of the shell. [details]
