Kerocythere raibliana (Gümbel, 1869)

Forel, Marie-Béatrice, Kolar-Jurkovšek, Tea & Jurkovšek, Bogdan, 2020, Ostracods from the ‘ Raibl Beds’ (Carnian, Late Triassic) of Belca section in Karavanke Mountains, northwestern Slovenia, Geodiversitas 42 (21), pp. 377-407 : 390-391

Kerocythere raibliana (Gümbel, 1869) ( Fig. 7J )

Cythere raibliana Gümbel, 1869: 184 , pl. 6, figs 36a, b.

Kerocythere raibliana – Urlichs 1972: 685, pl. 2, figs 9-13 only. — Liebermann 1979: 102, pl. 5, fig. 4. — Kolar-Jurkovšek 1990: 84, 85, pl. 14, fig. 5. — Monostori 1994: 319, figs 5/1-3, 6/4.

Kerocythere (Kerocythere) raibliana raibliana – Kristan-Tollmann 1972: 44, 45, pl. 1, figs 5-7. — Kristan-Tollmann et al. 1991b: 203, 204, pl. 2, figs 1-3.

EXAMINED MATERIAL. — Four right valves, two left valves.

OCCURRENCE. — Early Carnian, Late Triassic, Raibl, Southern Alps, Italy (Gümbel 1869); Early Carnian, Late Triassic, Raibl Beds, Raibl, Southern Alps, Italy (Kristan-Tollmann 1972); Norian-Rhaetian, Late Triassic, Kössen Beds, Austria ( Urlichs 1972); Carnian, Late Triassic, Italian Alps ( Liebermann 1979); Carnian, Late Triassic, Beli potok, Slovenia (Kolar-Jurkovšek 1990); Carnian, Late Triassic,Transdanubian range, Hungary (Kristan-Tollmann et al. 1991b); Early Carnian, Late Triassic, Balatón Highland, Hungary ( Monostori 1994); Nicoraella ? budaensis conodont zone, late Julian-?earliest Tuvalian, Carnian, Late Triassic, sample BE18 ( Fig. 3 ), Belca section, ‘Raibl Beds’, Karavanke Mountains, Slovenia (this work).

DISCUSSION

This rare species has only been found in sample BE18 of the Belca section ( Fig. 3 ). Because of their preservation state, the specimens from Belca were not measured. Of the six specimens illustrated from the Norian-Rhaetian, Late Triassic, of Austria ( Urlichs 1972), Kristan-Tollmann et al. (1991b: 203, 204) rejected to specimens ( Urlichs 1972: pl. 2, figs 11, 12), questioned three others ( Urlichs 1972: pl. 2, figs 9, 10, 13) and considered only one specimen ( Urlichs 1972: pl. 2, fig. 14) as belonging to Kerocythere raibliana (Gümbel, 1869) . However, they provided no discussion to support this choice. Here we do not follow this taxonomic choice and rather reject the specimen shown on the plate 2, figure 14 in Urlichs 1972 because it displays an anteromarginal ridge, which is lacking in K. raibliana but is present in K. hartmanni (Bolz & Kozur in Bunza & Kozur, 1971).

Figures

FIG. 7. — Ostracods from the Belca section, Karavanke Mountains, northwestern Slovenia, Carnian, Late Triassic. All specimens are deposited in the micropalaeontology collections of the Geological Survey of Slovenia, under the numbers GeoZS6132 to GeoZS6239, preceded by sample number: A, Pontocypris? karavankensis Forel, n. sp., lateral view of a right valve, BE18 (GeoZS6174); B, C, Monoceratina sp.; B, lateral view of a right valve, BE21 (GeoZS6175); C, lateral view of a right valve, BE18 (GeoZS6176); D, Citrella? carniana Forel in Forel et al. 2019, lateral view of a right valve, BE2 (GeoZS6177); E, F, Judahella dizluense Kristan-Tollmann, 1980; E, lateral view of a right valve, BE18 (GeoZS6178); F, lateral view of a left valve, BE21 (GeoZS6179); G, Judahella cf. galli Kozur & Bolz in Bunza & Kozur, 1971, lateral view of a right valve, BE18 (GeoZS6180); H, Judahella sp., lateral view of a right valve, BE18 (GeoZS6181); I, Kerocythere cf. hartmanni Bolz & Kozur in Bunza & Kozur, 1971, lateral view of a right valve, BE18 (GeoZS6182); J, Kerocythere raibliana (Gümbel, 1869), lateral view of a left valve, BE18 (GeoZS6183); K-M, Kerocythere reticulata Kristan-Tollmann, 1972; K, lateral view of a left valve, BE18 (GeoZS6184); L, lateral view of a right valve, BE18 (GeoZS6185); M, lateral view of a right valve, BE18 (GeoZS6186); N, O, Kerocythere tuvalica Kozur, 1971; N, lateral view of a left valve, BE17 (GeoZS6187); O, lateral view of a left valve, BE21 (GeoZS6188); P, Q, Kerocythere sp. 1; P, lateral view of a right valve, BE21 (GeoZS6189); Q, lateral view of a right valve, BE21 (GeoZS6190); R, S, Simeonella daginikella Forel in Forel et al. 2019; R, lateral view of a right valve, BE18 (GeoZS6191); S, lateral view of a right valve, BE18 (GeoZS6192); T, U, Renngartenella sanctaecrucis Kristan-Tollmann in Kristan-Tollmann & Hamedani, 1973; T, lateral view of a right valve, A-1, BE2 (GeoZS6193); U, lateral view of a right valve, A-1, BE2 (GeoZS6194). Scale bars: 100 μm.

FIG. 3. — Distribution of ostracod species through the Belca section, Karavanke Mountains, northwestern Slovenia.