Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 80. (Budapest 1988)

Pálfy, J.: Middle Triassic rhynchonellids from the Balaton Highland (Transdanubian Central Range, Hungary)

sectioning gave evidences for its belonging to the family Wellerellidae (and to the Mesozoic subfamily Cirpinae within it, in the sense of AGER 1965), based on the prefalcifer type of the crura and the short dorsal median septum. The triangular outline, the smooth posterior half of the shell and the rounded, gradually developing costation on the anterior half are the characteristic external features of the genus Trigonirhynchella. Earlier it was recorded only from the Upper Triassic. The present species shows only slight differences compared with the diagnostic internal characters of Trigonirhynchella. They are the subparallel dental plates instead of strongly divergent ones of the type species Trigonirhynchella trigona (DAGYS, 1961), and a less reduced dorsal median septum. However, a comprehensive study allows us to attribute the attilina to the Trigonirhynchella genus. Distribution: Beside the type-locality, the species was reported from the Dinarids and the West Carpathians. Stratigraphically it occurs in the Pelsonian as well as in the Illyrian. * * * Acknowledgement The author is especially indebted to A. VÖRÖS for his continuous encouragement, help and advice. Sincere thanks are due to A. GALÁCZ, who supervised the thesis work which formed the basis of the present paper. References AGER, D. V. (1965): Mesozoic and Cenozoic Rhynchonellacea. — In: MOORE, R. C. (ed.): Treatise on Invertebrate Paleontology. Part H.: Brachiopoda.

: H597-H625. ARTHABER, G. (1906): Die alpine Trias des Mediterrangebietes — In FRECH, F. (ed.): Lethaea geognostica. Part 2.: Mesozoicum.: 223-472. ASSERETO, R. (1963): Fossili dell'Anisico superiore délia Val Camonica. — Riv. ital. Paleont. Stratigr. 69(1): 3-123. ASSMANN, P. (1937): Revision der Fauna der Wirbellosen der oberschlesischen Trias. — Abh. preus. geol Landesanst. 170: 1-134. BESIC, Z. (1949): La faune a Brachiopodes du Trias aux environs du village Seljani dans la Piva (Montenegro). — Ann. geol. Penins. Balkan. 17: 105-122. BITTNER, A. (1890): Brachiopoden der alpinen Trias. — Abh. geol. Reichsanst. 14: 1-325. BITTNER, A. (1899): Trias Brachiopoda and Lamellibranchiata in Himalayan Fossils. — Mem. geol. Surv. India Paleont. indica ser. 15. 3(2): 1-143. BITTNER, A. (1902): Brachiopoden und Lamellibranchiaten aus der Trias von Bosnien, Dalmatien und Venetien. — Jb. geol. Reichsanst. 52: 495-643. BITTNER, A. (1912): Brachiopoden aus der Trias des Bakonyer Waldes. — Res. wiss. Erforsch. Balatonsee, Paläontologie 2(1): 1-58. BÖCKH, J. (1872): A Bakony D-i részének földtani viszonyai. [Geological setting of the Southern part of the Bakony Mts.] — Jb. ung. geol. Reichanst. 2(2): 65-173. (in Hungarian.) BÖCKH, J. (1873): Die geologischen Verhältnisse des südlichen Theiles des Bakony. I. Theil. — Jb. ung. geol. Anst. 2(2): 25-182. CASATI, P. & GNACCOLINI, M. (1967): Geologie delle Alpi Orobie occidentali. — Riv. ital. Paleont. Stratigr. 73(1): 25-162. DAGYS, A. S. (1974): Triassic brachiopods (Morphology, classification, phylogeny, stratigraphical significance and biogeography). — Novosibirsk: 1-385 (In Russian). DAGYS, A. S. (1977): New name for a Triassic rhynchonellid genus. — Paleont. Zh. 3: 139 (In Russian). DE TONI, A. (1912) : Brachiopodi della zona a Certatites trinodosus di Monte Rite in Cadore. — Mem. Ist. geol. miner. Univ. Padova 1: 319-351. DETRE, CS. (1970): The distribution of the brachiopods in the Triassic time — Ősi. Viták 15: 47-67 (In Hungarian with English abstract). DIENER, C. (1920): Brachiopoda Triadica. — Fossilium Catalogus I. Animalia 10: 1-108. FRECH, F. (1912): Neue Zweischaler und Brachiopoden aus Bakonyer Trias. — Res. wiss. Erforsch. Balatonsee, Paläontologie 2(2): 1-140. GAETANI, M. (1966): Decurtella, nuovo genere triassico di Rhynchonellida. — Riv. ital. Paleont. Stratigr. 72(2): 343-356.