Leviella veghae Kozur, 1972

(Fig. 11 K-T)

Leviella veghae Kozur, 1972: 21, pl. 1, fig. 3; pl. 2, figs 8-14.

Leviella raibliana – Kristan-Tollmann & Hamedani 1973: 213, pl. 12, figs 1, 2.

Leviella fraterna – Kristan-Tollmann et al. 1991b: 206, pl. 3, fig. 7.

EXAMINED MATERIAL. — More than 100 specimens, including isolated valves and complete carapaces.

OCCURRENCE. — Carnian, Late Triassic, Veszprem, Balatón highland, Hungary (Kozur 1972); Late Carnian, Late Triassic, marl layer in the middle part of the Opponitzer Limestone Formation, Göstling/ Ybbs, Austria (Kristan-Tollmann & Hamedani 1973); Carnian, Late Triassic, Raibl, Southern Alps, Italy (Kristan-Tollmann & Hamedani 1973); Carnian, Late Triassic, Transdanubian range, Hungary (Kristan-Tollmann et al. 1991b); Nicoraella ? budaensis conodont zone, late Julian-?earliest Tuvalian, Carnian, Late Triassic, samples BE2, 17, 18, 21, 23/1 (Fig. 3), Belca section, ‘Raibl Beds’, Karavanke Mountains, Slovenia (this work).

DIMENSIONS. — Fig. 13.

DISCUSSION

Leviella veghae Kozur, 1972 has been retrieved from all studied samples in Belca section. It is moderately abundant in BE2, abundant in samples BE17 to BE21 and rare in BE23/1 (Fig. 3). All the specimens available from the literature are gathered in Fig. 13. At least six ontogenetic stages are reconstructed from the right valves, where the gaps between the successive scatter plots are more clearly visible than for the left ones. Thanks to the complete carapaces documented from the present work, the stages A-1, A-2 and A-4 are constrained for right valves as well. On the basis of the ontogenetic stages here reconstructed, the holotype of L. veghae (a right valve) is an adult. The ontogenetic development of L. veghae is very similar to L. bogschi in that it mainly witnesses the progressive enlargement of the posterior end of the carapaces as well as the development of the lateral structures.