Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 26. 2008. (Budapest, 2008)
Anoptychia acutissima (HÖRNES, 1853) (Figure 88) 1853: Chemnitiça acutissima HORN. — HÖRNES, p. 757. 1861: Cbemnihna acutissima HORN. — STOLICZKA, p. 165, pl. 1, fig. 6. Lectotype — GBa 2008/69/6/1 (selected here). Material — Thirty-two specimens, protoconch and undamaged peristome not found (GBa collections) Measurements H lectotype **28 111. **8.5 HP D *3 \\" AA *8° AL cylindrical Shape — Medium size but extremely high, needle-like, turriculate shell, consisting of extremely high whorls (HL/D>2.6) of feebly convex surface and considerable number (~12 on most complete shell without protoconch). Shell outline cyrtoconoidal but postjuvenile whorls almost cylindrical. On adult shell, diameter of last whorl may be somewhat smaller than that of penultimate whorl. Suture nearly flush and visible as weak groove. Periphery of base rounded angular, base itself convex and anomphalous. Peristome and aperture elongate (drop-shaped) in direction from suture to foot of columella; broken surface suggests presence of rudimentary siphonal outlet. Inner hp, visible as callosity 7 , continuous from suture to foot of columella. Sculpture —Juvenile shell (first eight whorls on best-preserved specimen = lectotype) ribbed; five, regularly repeating, strong, suture to suture, collabral ribs of feebly parasigmoidal shape found on all whorls, which became pentagonal in cross-section (perpendicular to axis). Ribs develop slighdy smaller than 72° periodicity 7 therefore five gendy twisted axial row T s formed. Ribs rather suddenly disappear on 8 th (visible) whorl then only opisthocline growth-lines observable collabrally. Whole shell covered by fine spiral threads. Remarks — In lack of protoconch and complete peristome, finding of a systematical place cannot be completely reliable. The inferable siphonal notch on the peristome and the orientation of the growth-lines suggest belonging to more advanced caenogastropod group than Loxonematoidea. Cerithioidean or rissoidean relation seems also conceivable. The habit of the complete shell resembles more to the members of the latter group. Distribution — flails tatt, Hierlatz Alpe, Upper Sinemurian (Oxynotum Zone); Kratzalpe, Sinemurian. Figure 88 — Anoptychia acutissima (HÖRNES, 1853), lectotype. — 6 a-c: copy of the original figures from STOLICZKA (1861) Tafel I; A: the lectotype, xl; B: magnified image of the lectotype, X2.5. Superfamily Pseudomelanioidea FISCHER, 1885 Family Pseudomelaniidae FISCHER, 1885 Genus Oonia GEMMELLARO, 1879 Type species: Melánia abbreviata TERQUEM, 1855 Oonia pennina (PARONA, 1892) (Figure 89) 1880: Cbemnityasp. — P\R()NA, p. 210, pi. 3, fig. 10. 1892: Pseudomelaniapennina n. sp. — PARONA, p. 12, pl. 1, figs 1-2. 1967: Anoptychia dubia (TERQUEM) — SACCHI VlALLI & CANTALUPPI, p. 119, pi. 18, figs 3 a-b. 1983: Oonia pennina (PARONA, 1892) — SZABÓ, p. 35, pi. 3, fig. 9. Material — A single specimen with shell of damages (HGM). Measurements H HL HP D W AA AL Figure 89 28 19 22 45° 35° Shape — Slightly ovate shell with moderately high spire, and feebly convex whorls, having thick spiral fold immediately below suture, separated from other parts of whorl surface by wide, shallow, concave zone. Base convex, and without umbilicus. Sculpture — Whorls spirally ornamented with fine striation visible only by magnification. Shell becomes gradually smooth from suture towards periphery, then
