Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 24-25. 2007. (Budapest, 2007)

Orthotoma aff. apenninica (CANAVARI, 1883) Lobothyris punctata (SOWERBY, 1813) Lobothyris cf. andleri (OPPEL, 1861) Rhapidothyris ? cf. ovimontana (BÖSE, 1898) Rhapidothyris ? aff. beyrichi (OPPEI., 1861) VialHthyris gosganensis (PARONA, 1880) (Plate II: 23) VialHthyris ? deloren^pi (BÖSE, 1900) (Plate II: 24a-b) Unguithyris aspasia (ZlTTEL, 1869) (Plate II: 31, 32, 33a-c) Linguithyris cf. linguata (BÖCKH, 1874) Linguithyris cornicolana (CANAVARI, 1881) Securithyris adnethensis (SUESS, 1855) (Plate II: 25, 26a-b, 27a-b) Securithyris fitosa (CANAVARI, 1880) (Plate II: 29a-b, 30a-b) Securithyrisparonai (CANAVARI, 1880) (Plate II: 28) Papodina bittneri (GEYER, 1889) (Plate II: 35a-c, 36a-b) Hesperithyris renierii (CATULLO, 1827) (Plate II: 34a-b) Hesperithyris cf. pacheia (Ulll.lG, 1879) Hesperithyris ? cf. costata (DUBAR, 1842) Hesperithyris ? aff. renierii (CATULLO, 1827) Lychnothyris rotypana (SCHAUROTH, 1865) Phymatothyris cerasulum (ZlTTEL, 1869) (Plate II: 22) Zeilleria mutabilis (OPPEL, 1861) Zeilleria oenana (BÖSE, 1898) Zeilleria bicolor (BÖSE, 1898) Zeilleria aquilina (FRANCESCHI, 1921) Zeilleria ci. waehneri GEMMELLARO, 1878 Zeilleria Hvingstonei GEMMELLARO, 1878 Zeilleria alpina (GEYER, 1889) Antiptychina ? rothplety (Di STEFANO, 1891) (Plate II: 38a-c) Antiptychina ? bellunensis (DAI. PlAZ, 1907) Antiptychina ? aff. gastaldii (PARONA, 1893) Aulacothyris ? amygdaloides (CANAVARI, 1880) Aulacothyris ? ci. fuggeri (BÖSE, 1898) Aulacothyris ? ballinensis (HAAS, 1912) (Plate II: 39a-b) Bakonyithyris apenninica (ZlTTEL, 1869) (Plate II: 37) Bakonyithyrispedemontana (Parona, 1893) Bakonyithyris ovimontana (BÖSE, 1898) Bakonyithyris avicula (UHLIG, 1879) Bakonyithyris meneghinii (PARONA, 1880) Bakonyithyris ? aff. ovimontana (BÖSE, 1898) Securina hierlatyica (OPPEL, 1861) Toarcian The Early Toarcian anoxie event (JENKYNS 1988) is distinctly manifested in the TR: the lowermost ammonoid zone (Tenuicostatum Zone) is generally missing (GÉCZY 1971b, 1972a), and the Falciferum Zone is poorly represented by sediments (banded carbonatic manganese ore, black shales or thin marly layers, see JENKYNS et al. 1991). From the Bifrons Zone onwards, the deposition of the pelagic red limestones is resumed. The Bifrons Zone is characterized by an extremely rich ammonoid fauna, yet it yielded only 7 brachiopod specimens in the Bakony and the Gerecse Mountains, all belonging to the species Unguithyris aspasia. Despite the thorough and voluminous collecting work, no brachiopods have been found in the higher part of the Toarcian. Aalenian The red, "rosso ammonitico" type limestones (Tölgy- Formation), representing the Aalenian Stage in the TR, hát Formation) and light grey siliceous limestones (Eplény did not yield any brachiopods. Bajocian The detailed ammonoid biostratigraphy of this stage m the TR was worked out by QAÍÁCZ (1976, 1980, 1991, 1995). In the lower part of the Bajocian almost the same lithologies prevail as those in the Aalenian. Brachiopods are rare; only a small fauna (of approx. 50 specimens) was collected from the Sauzei Zone at Lókút. The following species have been identified (their stratigraphical distribution is shown in Figure 3): Septocrurella retrosinuata (VACEK, 1886) Capillirhynchia ? brentoniaca (OPPEL, 1863) Pseudogibbirhynchia ? cf. etalloni (OPPEL, 1863) The Middle and Upper Bajocian is lithologically more diverse: dark red manganiferous limestones, coarse biodetrital limestones and, locally, radiolarites occur beside the typical pelagic limestones. The majority of the Bajocian brachiopods of the TR was found in the Bakony Mountains. Here the abundance and diversity

7 of brachiopods suddenly increased in the Humphriesianum Zone and this bloom lasted up to the end of the Bajocian. From this interval more than 500 specimens have been collected at several localities (Gyenes-puszta, Som-hegy, Fenyves-kút, Lókúti-domb). SPECIES Early Late Bajociiin 1 Bajocian Pseudogibbirhynchia ? cf. etalloni Septocrurella retrosinuata Septocrurella retrosinuata Capillirhynchia ? brentoniaca Capillirhynchia ? brentoniaca Stolmorhynchia ? dubari Apringia at la Apringia alontina Capillirhynchia ? kardonikensis Cardinirhynchia galatensis Septocrurella ? microcephala Septocrurella micula Stiirhyn ch iu su bech in at a Stiirhynch ia berchta Linguithyris nepos Kara dag i thy ris g er da Karadagithyris erycin a Karadagithyris phryne Karadagithyris seguenzae Karadagithyris aff. dolhae I Iallithyris ? fylgia I iallithyris ? alantanni Papoditta ? récupérai Papodiiia ? laticoxa Zugmayeria ? pygopoides Figure 3 — Stratigraphical distribution of the brachiopod species in the Bajocian of the Transdanubian Range.