Pleurocera acuta, from the United States Geological Survey.

Belongs within: Cerithiimorpha.

The Pleuroceridae are a group of freshwater gastropods with robust shells found in eastern North America. Members of the genus Pleurocera have high-spired shells of several whorls whereas Leptoxis shells are more inflated with only a few whorls.

<==Pleuroceridae [Pleuroceratidae, Pleurocerinae]
    |--Io fluviatilis (Say 1825) [incl. I. brevis Anthony 1860] BC01
    |--Triasamnicola G88
    |--Madagasikara Köhler & Glaubrecht 2010 BR17
    |--Anculosa Say 1821 [=Anculotus Say 1825, Ancylotus Herrmannsen 1846] BR05
    |--Pleurocera Rafinesque 1818 BR17
    |    |--*P. acuta Blainville 1824 BR17 [=Oxytrema acuta B63, Pleurocerus acutus B63]
    |    |--P. canaliculata B68
    |    |--P. elevatum W79
    |    |--P. neglectum W79
    |    `--P. subulare W79
    |--Ceriphasia Swainson 1840 [Ceraphasiinae, Ceriphasiidae, Ceriphasiinae] BR05
    |    `--*C. sulcata Swainson 1840 BR17
    |--Strepoma Haldeman 1863 [Strepomatidae, Strepomatinae] BR05
    |    `--*S. canaliculata (Say 1821) [=Melania canaliculata] BR17
    |--Ellipstoma Rafinesque 1818 (nom. rej.) [Ellipstomatidae, Ellipstomidae] BR05
    |    `--*E. gibbosa Rafinesque 1818 BR17
    |--Leptoxis Rafinesque 1818 BR17, B63 [incl. Anaplocamus Dall 1896 BR17; Anaplocamidae, Ancyloti]
    |    `--L. dilatata (Conrad 1835) [=Melania dilatata, Anculosa dilatata; incl. *Anaplocamus borealis Dall 1896] BR17
    |--Lithasiopsis BC01
    |    |--L. hinkleyi Pilsbry 1910 BC01
    |    `--L. mexicanus Pilsbry 1910 BC01
    |--Doryssa S11
    |    |--D. ipupiara Simone 2001 S11
    |    `--+--D. atra (Bruguière 1792) S11
    |       `--D. macapa (Moricand 1856) S11
    |--Gyrotoma Shuttleworth 1845 BR05 (see below for synonymy)
    |    |--*G. ovoidea Shuttleworth 1845 BR17
    |    |--‘Schizostoma’ cylindracea Mighels 1844 (n. d.) J49
    |    `--G. incisum Lea 1924 [incl. Schizostoma curta Mighels 1844] J49
    `--Lithasia Haldeman 1840 B63
         |--L. hubrichti Clench 1965 C65
         |--L. obovata B68
         `--L. verrucosa C65

Nomen nudum: Apella scissura Mighels in Anthony 1843 J49

Gyrotoma Shuttleworth 1845 BR05 [incl. Apella Mighels in Anthony 1843 (nom. inv.) J49, Schizostoma Lea 1843 nec Bronn 1835 nec Schlaeter 1838 J49; Gyrotominae]

*Type species of generic name indicated


[B63] Baker, H. B. 1963. Paludomidae (Pleuroceridae). Nautilus 77 (1): 34–35.

[B68] Bickel, D. 1968. Goniobasis curreyana lyoni, a pleurocerid snail of west-central Kentucky. Nautilus 82 (1): 13–18.

[BR05] Bouchet, P., & J.-P. Rocroi. 2005. Classification and nomenclator of gastropod families. Malacologia 47 (1–2): 1–397.

[BR17] Bouchet, P., J.-P. Rocroi, B. Hausdorf, A. Kaim, Y. Kano, A. Nützel, P. Parkhaev, M. Schrödl & E. E. Strong. 2017. Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia 61 (1–2): 1–526.

[BC01] Boyko, C. B., & J. R. Cordeiro. 2001. Catalog of Recent type specimens in the Division of Invertebrate Zoology, American Museum of Natural History. V. Mollusca, part 2 (class Gastropoda [exclusive of Opisthobranchia and Pulmonata], with supplements to Gastropoda [Opisthobranchia], and Bivalvia). Bulletin of the American Museum of Natural History 262: 1–170.

[C65] Clench, W. J. 1965. A new species of Lithasia from Mississippi. Nautilus 79 (1): 30–33.

[G88] Gray, J. 1988. Evolution of the freshwater ecosystem: the fossil record. Palaeogeography, Palaeoclimatology, Palaeoecology 62: 1–214.

[J49] Johnson, R. I. 1949. Jesse Wedgwood Mighels with a bibliography and a catalogue of his species. Occasional Papers on Mollusks 1 (14): 213–231.

[S11] Simone, L. R. L. 2011. Phylogeny of the Caenogastropoda (Mollusca), based on comparative morphology. Arquivos de Zoologia 42 (4): 161–323.

[W79] Walker, B. 1879. Catalogue of the shell-bearing Mollusca of Michigan. Journal of Conchology 2: 325–337.

Last updated: 24 February 2022.

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