Left (upper) and right valves of Primitia tumidula, from Benson et al. (1961).

Belongs within: Platycopida.

The Leperditellidae are a group of ostracods known from the Ordovician period. They have straight-hinged, unisulcate valves without any marginal frill, velate structures or flanges at the extremities of the hinge (Benson et al. 1961).

Leperditellidae [Leperditellacea, Primitiidae, Primitiinae]
    |--Leptoderos Hoare & Merrill 2004 HM04
    |    `--*L. arytaina Hoare & Merrill 2004 HM04
    |--Aparchitella Ivanova 1955 BB61
    |    `--*A. major Ivanova 1955 BB61
    |--Bonneprimites Swartz & Whitmore 1956 [incl. Eoprimitia Harris 1957] BB61
    |    `--*B. bonnemai (Swartz 1936) [=Primitia bonnemai] BB61
    |--Ectoprimitia Bouček 1936 BB61
    |    `--*E. corrugata (Krause 1892) [=Primitia corrugata] BB61
    |--Haploprimitia Ulrich & Bassler 1923 BB61
    |    `--*H. minutissima (Ulrich 1894) [=Primitia minutissima] BB61
    |--Milleratia Swartz 1936 BB61
    |    `--*M. cincinnatiensis (Miller 1875) [=Beyrichia cincinnatiensis] BB61
    |--Parahealdia Coryell & Cuskley 1934 BB61
    |    `--*P. pecorella Coryell & Cuskley 1934 BB61
    |--Sinoprimitia Hou 1953 BB61
    |    `--*S. sinensis Hou 1953 BB61
    |--Conchoprimites Hessland 1949 BB61
    |    |--*C. reticulifera Hessland 1949 BB61
    |    `--C. tolli BB61
    |--Hallatia Kay 1934 BB61
    |    |--*H. healeyensis Kay 1934 BB61
    |    `--H. convexa BB61
    |--Leperditella Ulrich 1894 BB61
    |    |--*L. rex Coryell & Schenck 1941 [=Leperditia inflata Ulrich 1892 non Munster 1830] BB61
    |    |--L. tumida (Ulrich 1892) WSB93
    |    `--L. valida Harris 1957 WSB93
    `--Primitia Jones & Holl 1865 BB61
         |--*P. mundula (Jones 1885) [=Beyrichia mundula] BB61
         |--P. duni Chapman 1920 F71
         |--P. elongata Krause 1891 C01 [incl. P. elongata var. parallela Chapman 1920 F71]
         |--P. fabulina Jones & Holl 1886 C01
         |--P. humilis Jones & Holl 1886 C01
         |--P. mammata BB61
         |--P. ornata Jones & Holl 1886 C01
         |--P. punctata Jones 1887 C01
         |--P. reticristata Jones 1887 C01
         |--P. scaphoides G88
         |--P. tumidula BB61
         `--P. valida Jones & Holl 1886 (see below for synonymy) C01

Primitia valida Jones & Holl 1886 [incl. P. valida var. angustata Jones & Holl 1886, P. valida var. breviata Jones & Holl 1886] C01

*Type species of generic name indicated


[BB61] Benson, R. H., J. M. Berdan, W. A. van den Bold, T. Hanai, I. Hessland, H. V. Howe, R. V. Kesling, S. A. Levinson, R. A. Reyment, R. C. Moore, H. W. Scott, R. H. Shaver, I. G. Sohn, L. E. Stover, F. M. Swain & P. C. Sylvester-Bradley. 1961. Systematic descriptions. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt Q. Arthropoda 3: Crustacea: Ostracoda pp. Q99–Q421. Geological Society of America and University of Kansas Press.

[C01] Chapman, F. 1901. On some fossils of Wenlock age from Mulde, near Klinteberg, Gotland; with notes by Prof. T. Rupert Jones and Dr. F. A. Bather. Annals and Magazine of Natural History, series 7, 7: 141–160, pl. 3.

[F71] Fletcher, H. O. 1971. Catalogue of type specimens of fossils in the Australian Museum, Sydney. Australian Museum Memoir 13: 1–167.

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

[HM04] Hoare, R. D., & G. K. Merrill. 2004. A Pennsylvanian (Morrowan) ostracode fauna from Texas. Journal of Paleontology 78 (1): 185–204.

[WSB93] Whatley, R. C., D. J. Siveter & I. D. Boomer. 1993. Arthropoda (Crustacea: Ostracoda). In: Benton, M. J. (ed.) The Fossil Record 2 pp. 343–356. Chapman & Hall: London.

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