Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 26. 2008. (Budapest, 2008)
Genus ? Pyrgotrochus P. FISCHER, 1885 Type species: Pleurotomaria hitorquata}. A. EUDES-DESLONGCHAMPS, 1849 Pyrgotrochus? cf. precatoria (J. A. EUDES-DESLONGCHAMPS, 1849) (Figure 39: A-F) ?pars 1853: Pleurotomaria principalis MÜNSTER — HÖRNES, p. 761. pars 1861: Pleurotomaria princeps KOCH & DINKER — STOLICZKA, p. 189, pi. 4, figs 7 a-b, 8. cf. 1997: Pyrgotrochusprinceps (KOCH, 1837) — FISCHER & WEBER, pp. 156, 160, pi. 34: 10 a-b, 11 a-b. Material — GBa 2008/69/43/2/1—30 specimens, most of them are very poorly preserved fragment. Measurements H HL HP D W AA AL GBa 2008/69/43/2/1 **37 **22 **13 - *55° 60° GBa 2008/69/43/2/2 *20 *9 *5.5 *8 *8 -56 *60° Shape — Rather widely conical(-trochiform) shell with broad, concave, moderately phaneromphalous base, having slightly convex outer belt. Apex feebly acute, and last whorl slightly more expanding than penultimate one. Whorls flattened but having feebly sigmoidal surface. Selenizone courses somewhat below mid-whorl on juvenile shell but gradually shifting near to periphery during growth. Periphery- itself rather sharp. Sculpture — Shell ornamented with spiral cords, growth-lines and two rows of nodulae above and below suture, respectively. Third row of tubercles/granules visible on early juvenile selenizone; with their disappearance, selenizone becomes continuous cord, being strongest spiral sculpture element along full length of shell. Subsutural row of nodulae present already on earliest known whorl but suprasutural ones develop only in post-juvenile stage. These latter rows of nodes remain weak, observable mainly as undulation of spiral cords. Subsutural nodulae gradually extend as low ridges to selenizone on last three whorls. Base co\ r ered by widely spaced spiral cords. Remarks — The granulate ornament of the selenizone on the juvenile whorl is an unusual feature in the Pleurotomariidae. Its taxonomical meaning has to be further studied, but it surely distinguishes these shells from those that have typical pleurotomariid jm^enile selenizone. This character excludes the possibility to treat Pyrgotrochus} cf. precatoria (J. A. EUDES-DESLONGCHAMPS, 1849) and ? Pleurotomaria princeps (KOCH, 1837) as a single species. Distribution — Hallstatt, Hierlatz Alpe, Upper Sinemurian (Oxynotum Zone). Genus Paevitomaria CONTI & SZABÓ, 1987 Type species: Pyrgotrochus? problematicus SZABÓ, 1980 Laevitomaria coarctata (STOLICZKA, 1861) (Figure 40) Figure 40 — Laevitomaria coarctata (STOLICZKA, 1861) — 3 a-b: copy of Pleurotomaria coarctata STOL. figures from STOLICZKA (1861) Tafel IV; A-C: lectotype in "apertural" (A), basal (B) and abapertural (C) views, xl; D-E: paralectotype xl (D), and in x2.5 (E) magnification to display the ornament.
