Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 20. 2002. (Budapest, 2002)

SZABÓ, J. Locality The Persani Mts is a hilly region in SE Transylvania, the central part of Romania witbin the East Carpatliian Arc, on the left side of the river Olt, NW from Brasov, the largest town in the neighbourhood of the locality. The fossiliferous outcrops were found in the valley of Tepei (= Tepe or Töpe) Creek, near the village Racosul de Jos, called Alsórákos (Hungarian) in the early publications Figure 1 — Skerxh map of me locality.

—Asterisk indicates the lixaHtyare^ (VADÁSZ 1908, 1915)]. In these papers, the fossils were said to be collected from Lower Liassic (Lias D = Sinemurian) "Adnet" type, marly, nodular and stratigraphicaily condensed limestone. The "Adnet" limestone (= "Rosso Arnmonitico" limestone) occurs in this region in olistoliths of different size, embedded in Barremian to Aptian wildflysch. Genetically, the olistoliths are regarded as fragments of the "Olt Nappe" (POPA & PATRUIJUS 1996). The composition of the ammonite fauna suggests origin from the Tethyan Mediterranean Faunal Province and indicates a Hettangian to Sinemurian age (PÁLFY 1999). However, it is important to note that Upper Triassic (Norian) Hallstatt-type limestone and younger Liassic (up to Toarcian) marls have also been found amongst the olistoliths in the locality area (POPA & PATKULIUS 1996). The Adnet and Hallstatt limestones are closely related genetically and their megascopic characteristics are the same in many respects. Therefore the Hettangian to Sinemurian age of the gastropod specimens cannot be regarded certain because there is a small chance of mixing of the collected material. Unfortunately, there is no matrix attached to the specimen available to prepare thin section to find micropalaeontological and/or microfacies evidence of the age. Regardless of its exact age, the only specimen, which preserved the shell microstructure and the outer morphology, appears to represent new taxa therefore warrants a detailed study. Systematics The nine specimens belong to four different surx^amilies and five species. Except one case, their preservation rjermits idmtification only with use of the open nomenclature. There will be also some uncertainties indicated on the higher levels of the taxonomical categories. These have arisen mainly from the recent changes, being done or needed in the gastropod classification Some of the new arrangements are incompletely developed, others seem not supported by important data or new taxa are needed to reflect the phylogenetic relations more exactly. Attached question marks will indicate doubts either about the rank of a taxon or the taxon itself, respectively. However, discussion of the problems in details is out of the scope of this paper. Abbreviations to measurements: H = total height; HL = height of last whorl; HP = height of peristome; D = diameter of last whorl; WP = width of peristome; AA = apical angle; AL = coiling angle of last whorl (if different from apical angle); AUA = umbilical angle in the earliest whorls; AUL = umbilical angle in the last whorl (if different from that of earliest whorls); ::

' = measured on damaged or apparent peristome. Class Gastropoda CUVIER, 1797 Subclass? Archaeogastropoda THIELE, 1925 Order ?Vetigastropoda SALVLNI-PLAWEN, 1980 Superfamily Pleurotomarioidea SWAINSON, 1840 Family PPleurotomariidae SwAINSON, 1840 Bathrotomariai sp. Material — Single, strongly fragmentary specimen of inner cast preservation. Measurements H HL HP D WP AA AL AUA AUL '47.5 m *31 !|

T5 *81° Remarks — The specimen consists of two badly damaged bear a rounded spiral angulation at midwhorl position. Two whorls of a broadly phaneromphalous species. The whorls obscure spiral incisions, at the angulation, indicate presence