Family PARADOXOSTOMATIDAE Brady & Norman, 1889

Museums

Regional Maps

• Paradoxostomatidae Brady, G.S. & Norman, A.M. 1889. A monograph of the marine and freshwater Ostracoda of the North Atlantic and of Northwestern Europe. Section I: Podocopa. Scientific Transactions of the Royal Dublin Society 4(2): 63-270.

  Type genus:

   Paradoxostoma Fischer, 1855.

Diagnosis

Valves weakly calcified, usually smooth. Carapace elongate, laterally compressed. Fused zone narrow. Line of concrescence and inner margin separated, and large vestibule present at valve ends. Marginal pore canals sparse. Normal pore canals simple. Hinge adont, rectodont or lophodont. Antennula 5-segmented. Exopodal seta on antenna well developed with complicated gland at its inner end. Respiratory plate of mandibula reduced, palp weak and slender. Palps and endites of maxillula also show different stages of reduction. Respiratory plate with 2 anteriorly directed setae. Thoracopods slender and of different lengths. Kneebristle in male strong. Lips cone-like, projecting, and increasingly fused into sucking disk within family.

Diagnosis References

Hartmann, G. & Puri, H.S. 1974. Summary of neontological and paleontological classification of Ostracoda. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut 70: 7-73 [49]

History of changes