WoRMS taxon details
Quasibradleya plicocarinata Benson, 1972
794408 (urn:lsid:marinespecies.org:taxname:794408)
accepted
Species
Bradleya (Quasibradleya) plicocarinata Benson, 1972 · unaccepted (superseded combination)
marine, brackish, fresh, terrestrial
Not documented
Holotype USNM 174334, geounit Great Australian Bight
, Note "The Great Australian Bight in the vicinity of...
Holotype USNM 174334, geounit Great Australian Bight [details]
From editor or global species database
Type locality "The Great Australian Bight in the vicinity of Oceanographer station OSS-01,60K (lat. 33°1O.0'S and long. 130 0 54.5'E; 100 meters)." (Benson, 1972; 46) [details]
Distribution "Mid-shelf south of Australia. Miocene (?) to Recent." (Benson, 1972; 46)
Distribution "Mid-shelf south of Australia. Miocene (?) to Recent." (Benson, 1972; 46) [details]
Brandão, S. N.; Antonietto, L. S.; Carvalho, A. B. G. D.; Pereira, J. S.; Pereira, S. G. G.; Praxedes, R. A.; Sá, H. A. B.; Sabater, L. M. (2026). World Ostracoda Database. Quasibradleya plicocarinata Benson, 1972. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=794408 on 2026-06-13
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Nomenclature
original description
(of Bradleya (Quasibradleya) plicocarinata Benson, 1972) Benson, R.H. (1972). The <i>Bradleya</i> Problem, with descriptions of two new psychrospheric ostracode genera, <i>Agrenocythere</i> and <i>Poseidonamicus</i> (Ostracoda: Crustacea). <em>Smithsonian Contributions to Paleobiology.</em> 12: 1-138., available online at http://si-pddr.si.edu/jspui/handle/10088/1879 [details] Available for editors 
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Holotype USNM 174334, geounit Great Australian Bight [details]
From editor or global species database
Diagnosis "This species of Bradleya (Quasibradleya) is distinguished by its moderate size, elongate shape, and unique formation of tricarinate ridges, with the median ridge joined with the dorsal carina forming a posterodorsal loop. The median ridge extends anteriorly to join a complex of muri over the muscle-scar region, which is characterized by the prominent development of the central longitudinal member (Figure 19). The dorsal element of the bridge, which unites with the bold ocular ridge, passes over this complex to join the median ridge. The lower bridge element is prominent only in the posterior portion. In general, the muri are foveolate, nonexcavate and noncelate. The posterior cardinal angle is not produced; however, the posterior margin is generally enlarged toward the posteroventer. Species is sighted with an eye tubercule." (Benson, 1972; 46) [details]Dimensions "Length of holotype 0.88 mm; height 0.46 mm." (Benson, 1972; 46) [details]
Distribution "Mid-shelf south of Australia. Miocene (?) to Recent." (Benson, 1972; 46) [details]
Remark "This species is similar to Bradleya (Quasibradleya) dictyonites, new species, in that the median ridge has continuity and reaches forward to join the ocular ridge. B. (Q.) dictyonites has no loop formed by the ridge and its more flared dorsal carina, and the reticulum covers the muscle-scar node in a more knotlike fashion, rather than the prominent ridges of B. (Q.) plicocarinata. B. (Q.) prodictyonites, new species, has the posterodorsal loop, but its posterior margin is foreshortened as the whole lateral appearance is considerably more quadrate. The much bolder appearance and lack of a loop separates B. (Q.) paradictyonites, new species, from the present species.
I have noted yet another species, or a variant of the present species which is very similar to B. (Q.) plicocarinata from the Miocene Mannum forma.tion on the River Marne about 50 miles west of Adelaide, Australia. Some years back Mary Wade sent this material to me, but I do not trust my locality data sufficiently to describe this new form. It is characterized by a very elongate shape in the male with a very flared extension in the ventrolateral ridge causing the posterior to seem bent downward. This flaring of the posteroventer in the male is common to a number of species in quite separate genera. Examples are "Cythere" dunelmensis Brady, Cletocythereis rastromarginata (Brady), and Agrenocythere pliocenica (Seguenza)." (Benson, 1972; 46) [details]
Type locality "The Great Australian Bight in the vicinity of Oceanographer station OSS-01,60K (lat. 33°1O.0'S and long. 130 0 54.5'E; 100 meters)." (Benson, 1972; 46) [details]
Type specimen "The holotype (USNM 174334) is an adult male left valve from the Recent of the Great Australian Bight (Figure 18)." (Benson, 1972; 46) [details]
From editor or global species database
(specimen)
