Simeonella daginikella Forel in Forel, Tekin, Okuyucu, Bedi, Tuncer & Crasquin, 2019

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 : 391

Simeonella daginikella Forel in Forel, Tekin, Okuyucu, Bedi, Tuncer & Crasquin, 2019 ( Fig. 7 R, S )

Simeonella daginikella Forel in Forel, Tekin, Okuyucu, Bedi , Tunc- er & Crasquin, 2019a: 41, 43, figs 22A-E.

EXAMINED MATERIAL. — Two right valves, one left valve.

OCCURRENCE. — Tetraporobrachia haeckeli radiolarian Zone, Julian, Carnian, Late Triassic, Mersin Mélange, southern Turkey, Huğlu Tuffite (Forel et al. 2019a); Nicoraella ? budaensis conodont zone, late Julian-?earliest Tuvalian, Carnian, Late Triassic, sample BE18 ( Fig. 3 ), Belca section, ‘Raibl Beds’, Karavanke Mountains, Slovenia (this work).

DIMENSIONS. — L = 393-430 µm, H = 236-359 µm (this work).

DISCUSSION

This rare species has only been found in sample BE18 of the Belca section, where it is not abundant ( Fig. 3 ). Simeonella daginikella is very close to S. brotzenorum Sohn, 1968 from the Carnian, Late Triassic, of Israel ( Sohn 1968) from which it differs by its narrower posterior border bearing a series of small spines and its overall smaller dimensions ( S. brotzenorum : L = 420-510 µm, H = 260-310 µm; S. daginikella : L = 326-400 µm, H = 179-256 µm). The specimens of S. brotzenorum Sohn, 1968 from the Carnian of Israel documented by Gerry et al. (1990) show the same size difference compared to S. daginikella . Simeonella brotzenorum norica Bunza & Kozur, 1971 was subsequently described from the late Norian, Late Triassic, of Austria (Bunza & Kozur 1971) based on its stronger lateral inflation, absence of eye-knot and broader ventral margin compared to S. brotzenorum Sohn, 1968 . Simeonella daginikella is very close to S. brotzenorum norica Bunza & Kozur, 1971 from which it differs by its posterior spines. The synonymy between S. daginikella and S. brotzenorum norica should be carefully considered by investigating specimens from the type locality using SEM given that S. brotzenorum norica was only drawn.

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.