Heidelbergeria czarnieckii, Krawczyński, 2006

Krawczyński, Wojciech, 2006, Gastropod succession across the Early-Middle Frasnian transition in the Holy Cross Mountains, southern Poland, Acta Palaeontologica Polonica 51 (4), pp. 679-693 : 690

Heidelbergeria czarnieckii sp. nov.

Fig. 5A–C .

Holotype: ZPAL Ga−VI/29 ( Fig. 5A ).

Type locality: Abandoned quarry Kadzielnia in Kielce, Holy Cross Mountains, Poland.

Type horizon: The Kadzielnia Member, Early Frasnian (Late Devonian).

Derivation of the name: In honour of Dr. Stanisław Czarniecki—a scholar of Carboniferous fossils from Cracow ( Poland).

Material.—Two near−complete shells, a single fragment, and one mould of external shell surface (ZPAL Ga−VI/29; GIUS 4−1109 Jaź−4, 4−1146 Jaź−41).

Diagnosis.— H. czarnieckii is characterised by a turbiniform shell with low whorls; whorls embrace each other at one third of whorl height; profile of whorls distinctly rounded; no ornament.

Description. —Shell small, dextral, turbiniform with four whorls (size of holotype: height 9 mm, width 9 mm). Whorl height less than that of aperture. Profile of whorls is distinctly rounded. Sutures are deep, situated somewhat below the whorl periphery. Growth line is almost orthocline just below suture and then arches to strongly prosocline. Base is rounded and narrowly phaneromphalous. Outer lip is rounded and thin. Columellar lip is thick and slightly convex and expanded into the umbilicus, and at an angle of ca. 30 ° with respect to shell axis. Columellar lip connected to shell wall at two−thirds of height of aperture and forming delicate thickening at the parietal part. Aperture is oval, teardrop−shaped holostomatous with angulation at contact of outer lip with shell wall; almost no ornament, except of delicate growth lines. Archaeogastropod−like protoconch with a diameter of 200 µm (see Fig. 5A 4 and B). Pleural angle is 90 °. 4

Discussion.— Heidelbergeria czarnieckii sp. nov. is probably endemic, and is encountered in the Euryzone kielcensis association within the Kadzielnia−type reefal assemblage.

Occurrence. — At the type locality Kadzielnia (set A) and at the active quarry “Jaźwica” near Kielce (set J; Kadzielnia Member; Early Frasnian), Holy Cross Mountains, Poland .

Figures

Fig. 5. Early Frasnian Trochoidea (Vetigastropoda) from the Holy Cross Mountains. A–C. Heidelbergeria czarnieckii gen. et sp. nov. A. A. ZPAL Ga−VI/29, Kadzielnia (set A), apertural (A1), lateral (A2), apical (A3) views, and apical view of protoconch (A4) of the holotype.B, C. Jaźwica quarry (set J). B. GIUS 4−1109 Jaź−4, apertural (B1), lateral (B2), apical (B3) views, and apical view of protoconch (B4). C. GIUS 4−1146 Jaź−41, apertural view. D, E. Roemeriella octocincta (Roemer, 1843), Jaźwica quarry (set J). D. GIUS 4−1130 Jaź−25, apertural (D1) and lateral (D2) views. E. GIUS 4−1129 Jaź−24, lateral view. F–L. Kowalatrochus sanctacrucensis Krawczyński, 2002. F. GIUS 4−1569 Ko−81, apertural (F1) and lateral (F2) views of holotype. G–I, L. GIUS 4−1219 Ko−6 (G), GIUS 4−1226 Ko−13 (H), GIUS 4−1614 Jaź−96 (I), and ZPAL Ga−VI/58 (L), lateral views. J. ZPAL Ga−VI/59, apertural (J1) and lateral (J2) views. K. GIUS 4−1223 Ko−10, apertural view. F–H, J–L. Kowala quarry (set A). I. Jaźwica quarry (set I).

Fig. 4. Early Frasnian Eotomarioidea and Porcellioidea (Vetigastropoda) from the Holy Cross Mountains. A–C. Frydiella kaimi gen. et sp. nov., Jaźwica quarry (set J). A. Holotype, GIUS 4−1136 Jaź−31, lateral view. B. GIUS 4−1137 Jaź−32, apertural (B1), lateral (B2), and basal (B3) views of shell. C. GIUS 4−1135 Jaź−30, fragment of last whorl with well preserved ornamentation. D, E. Lahnospira taeniata (Goldfuss, 1844), Kostomłoty II (Małe Górki) quarry (set B3). D. GIUS 4−2282 Kos−12, apertural view of pyritised shell. E. GIUS 4−2277 Kos−7, lateral view of pyritised shell. F–H. Euryzone delphinuloides (Schlotheim, 1820). F, G. GIUS 4−1237 Ko−24 (F) and GIUS 4−1239 Ko−26 (G), Kowala quarry (set A), lateral views of shells. H. GIUS 4−1637 Jaź−119, Jaźwica quarry (set J), apical (H1) and lateral (H2) views of shell. I–K. Porcellia bifida (Sandberger and Sandberger, 1856), Jaźwica quarry (set J). I, J. GIUS 4−1629 Jaź−111 (I) and GIUS 4−1628 Jaź−110 (J), apical views of shells. K. GIUS 4−1140 Jaź−35, apical (K1) and lateral (K2) views of shell. L, M. Euryzone kielcensis (Gürich, 1896). L. GIUS 4−1467 Kd−3, Kadzielnia (set A), lateral views of neotype shell. M. GIUS 4−1134 Jaź−29, Jaźwica quarry (set J), lateral view of juvenile shell.