Triadogigantocypris balatonica Monostori, 1991

Tóth, Emőke & Cséfán, Tünde, 2018, Rare myodocopid ostracods from Mesozoic sections of Hungary: summary, revision and description of new taxa, Zootaxa 4374 (3), pp. 350-374 : 364-366

Triadogigantocypris balatonica Monostori, 1991

Figs. 6/12abc

Remarks. The re-examination of the holotype (Fig. 6/12abc) revealed that the densely grained surface is a remnant of the original shell. Like other myodocopids, Triadogigantocypris balatonica had a carapace made of amorphous calcium carbonate; this is in contrast to podocopid carapaces, which consist of crystallized calcium carbonate. According to Sohn & Kornicker (1969), nodules are formed mainly post-mortem in the carapace of myodocopid ostracods and this leads to disintegration of the shell. These nodules can be observed on the carapace—mentioned by Monostori (1991) in the original description—as ornamentation on the surface of the mould.

FIGURE 6

1. Hungaroleberis retiferus n. sp. Holotype, EMNH 2014.211.2.6. C in right view: Somhegy outcrop, Bed 3. Scale: 100 µm. 2. Hungaroleberis retiferus n. sp. EMNH 2014.211.2.5. C in right view: Somhegy outcrop, Bed 3. Scale: 100 µm. 3. Hungaroleberis retiferus n. sp. Paratype, EMNH 2014.211.2.4. C in left view: Somhegy outcrop, Bed 3. Scale: 100 µm. 4. Hungaroleberis sp. EMNH 2014.211.3.4. C in left view: Csurgókút outcrop. Scale: 100 µm. 5. Hungaroleberis sp. EMNH 2014.211.2.8. C in left view: Somhegy outcrop, Bed 3. Scale: 100 µm. 6. Hungaroleberis sp. EMNH 2014.211.1.7. C in left view: Somhegy outcrop, Bed 3. Scale: 100 µm. 7. Triadocypris sp. EMNH 1.2011.2.4.2. C in left view: Litér quarry, Bed 18. Scale: 100 µm. 8. Palaeocypridina tulceaensis Sebe, 2013 . EMNH 1.2011.1.8.8. C in right view: Litér quarry, Bed 4. Scale: 100 µm. 9. Palaeocypridina goeroegae n. sp. EMNH 2014.212.1.1. Left V inner view: Litér quarry, Bed 2. Scale: 100 µm. 10. Palaeocypridina goeroegae n. sp. Paratype, EMNH 1.2011.2.2.4. Right V in lateral view: Litér quarry, Bed 15. Scale: 100 µm.

11. Palaeocypridina goeroegae n. sp. Holotype, EMNH 1.2011.2.4.1. Left V in lateral view: Litér quarry, Bed 14. Scale: 100 µm.

12. Triadogigantocypris balatonica Monostori, 1991 . Holotype, NHMUS M. 90.1. Vászoly outcrop, Bed 16/A. Scale: 1 mm. a) C in right view. b) C in anterior view. c) C in left view.