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Facies
1-14. DOI: 10.1007/s10347-005-0040-2
New associations of
Carnian gastropods from Mežica region in the
Karavanke
Mountains
of
Slovenia
.
Kaim, A.,
Jurkovšek, B., and Kolar-Jurkovšek, T.
Abstract Two
gastropod assemblages from the Carnian (Upper Triassic) Raibl Beds of the Mežica
region (
Karavanke Mountains
,
Slovenia
) are described. The almost monospecific, older assemblage from Mežica Mine
was found as a thin shell pavement in the clastic sequence. This association
apparently originated during a period of reduced sedimentation. The younger
assemblage from
Helena
Creek
was found at the upper surface of an oolitic and oncoidal limestone and
represents a more diversified fauna of a crinoid/coelenterate/polychaete
meadow. Together, both assemblages contain 11 gastropod species. Five of them
are left in open nomenclature, two are known from other localities in the
Alps
, and the remaining four are new. The new species are Sloeudaronia
karavankensis (Skeneidae), Helenostylina mezicaensis (Coelostylinidae),
Ampezzopleura slovenica and Striazyga crnaensis (Zygopleuridae).
Two new genera, Sloeudaronia (Skeneidae) and Helenostylina (Coelostylinidae),
are described.
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