Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 26. 2008. (Budapest, 2008)

Type strata — Upper Sinemurian (Oxynotum Zone) Hierlatz Limestone. Name — Acutus (Latin) = sharp, pointed. Diagnosis — Thin-walled trochiform shell, consisting of numerous, low whorls of smooth outer surface, separated by feebly incised, almost flush suture; juvenile whorls prominently acute; peripher)

7 angular, base convex and rather broadly phaneromphalous; spiral lineation may appear on base. Material — Thirty specimens from the Hierlatz Alpe (GBa) and ten from the Bakony Mts (HGM). Measurements H HL HP holotype T 11.8 4.4 Shape — Markedly trochiform, thin-walled shell with numerous (12—15), slighdy convex, low whorls and impressed suture. Peripher}

7 sharply angulate and convex, rather broadly phaneromphalous base seen below it. Aperture probably cruadrangular but never found undamaged. Rim of umbilicus rounded-angular. Sculpture — Almost only fine growth lines found, which prosocline on whorls and opisthoclineopishtocyrt on base, but some obscure spiral lines also found on base of holotype. Some Bakony Mts specimens have well visible, dense, fine spiral lineation on base. Remarks — STOLICZKA (1861) and SZABÓ (1981) identified this species as Trochus lateumbilicatus D'ORBIGNY, 1852, however, the latter author expressed the similarities of the Hierlatz Limestone specimens to each other and their differences from D'ORBIGNY's figures in the acute apex and larger adult dimensions. These differences (more in the diagnosis) provide basis to designate this new species. The previously applied name became a nomen dubium by FISCHER & WEBER'S (1997) revision of the collection to D'ORBIGNY's (1850-1854) monograph; no specimen had been found matching to the species description. Distribution — Hierlatz Alpe, Sinemurian (Oxy D W AA AL 13 6.2 *54° 44° notum Zone); Bakony Mts: Sümeg, Upper(?) Sinemurian, Szentgál, Sinemurian (Raricostatum Zone), Lókút, Kericser: beds of mixed fauna (Obtusum to Ibex Zone) and Ibex Zone. Figure 58 — Anticonulus acutus n. sp., holotype. — 13 a-b: copy of figures of "Trochus lateumbilicatus D'ORBIGNY, 1852" from STOLICZKA (1861) Tafel I; A-C: holotype selected from the "originals collection", "apertural" (A), dorsal (B) and basal (C) views, xl; D-E: magnified "apertural" (D) and basal (E) views to show the details, x2. Anticonulus? torosus (STOLICZKA, 1861) (Figure 59) 1861: Trochus torosus STOL. — STOLICZKA, p. 170, pl. 1, fig. 18. Lectotype — (monotype) GBa 2008/ 69/15/1 (selected here) Material — The only specimen has neither apical nor basal parts of the shell. Measurements H HL HP lectotype Figure 59 — Anticonulus? torosus (STOLICZKA, 1861), lectotype. — 18 a-b: copied original figures from STOLICZKA (1861) Tafel 1; A—B: lectotype in "apertural" (A) and "dorsal" (B) views, xl; C—D: magnified "apertural" (D) and "dorsal" (C) views to show the ornament, x3. Shape — Small, thick—walled, conical shell of low, feebly concave whorls, carinate at periphery just abo\

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e D W AA AL **5 - 42° 42° suture, being canaliculate. Apical broken surface uncertainly suggests presence of narrow umbilicus. Neither peristome nor base part remained observable. Sculpture — Only ornament on first visible whorl weak, double thread just below suture; upper one stronger; remaining whorl surface smooth. On next whorl, three other threads appear on previously smooth surface and becoming gradually stronger, like lower subsutural one. These elements persist on remaining whorls. Growth-lines fine and strongly prosocline. Remarks — Because of the damages there is no certain indication to the generic attribution. At the same time, no doubt found about the independent state of the species. Distribution — Kratzalm near Golling, Sinemurian (Obtusum Zone).