Graviidae

Left view of Ceratocypris longispina, from Benson et al. (1961).

Belongs within: Ostracoda.

The Graviidae are a group of Palaeozoic ostracods characterised by a carapace with epibolic ventral margins.

<==Graviidae M61
    |--Gravia Polenova 1952 (n. d.) BB61
    |    `--*G. aculata Polenova 1952 BB61
    |--Pribylina Ivanova 1959 LH61
    |    `--*P. levis Ivanova 1959 LH61
    |--Boucekites Přibyl 1951 M61, BB61
    |    `--*B. devonicus Přibyl 1951 BB61
    |--Selebratina Polenova 1952 (n. d.) M61, BB61
    |    `--*S. dentata (Polenova 1952) [=Gravia (*Selebratina) dentata] BB61
    |--Pinnatulites Hessland 1949 M61, BB61
    |    `--*P. procera (Kummerow 1924) [=Primitiella procera] BB61
    `--Ceratocypris Poulsen 1934 M61, BB61
         |--*C. symmetrica Poulsen 1934 BB61
         `--C. longispina BB61

*Type species of generic name indicated

REFERENCES

[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.

[LH61] Levinson, S. A., & H. V. Howe. 1961. Addendum. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt Q. Arthropoda 3: Crustacea: Ostracoda pp. Q421–Q422. Geological Society of America and University of Kansas Press.

[M61] Moore, R. C. 1961. Supplement—USSR treatise on Ostracoda. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt Q. Arthropoda 3: Crustacea: Ostracoda pp. Q422–Q429. Geological Society of America and University of Kansas Press.