Hollinella fengqinglaii Crasquin, 2013
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publication ID |
https://doi.org/ 10.4202/app.2011.0126 |
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publication LSID |
lsid:zoobank.org:pub:15268E3E-5628-419C-B76F-6710BA70723E |
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persistent identifier |
https://treatment.plazi.org/id/84247DE6-7BFA-4C81-A935-5FA91682D903 |
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taxon LSID |
lsid:zoobank.org:act:84247DE6-7BFA-4C81-A935-5FA91682D903 |
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treatment provided by |
Felipe |
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scientific name |
Hollinella fengqinglaii Crasquin |
| status |
sp. nov. |
Hollinella fengqinglaii Crasquin sp. nov.
Fig. 4I–L View Fig .
Etymology: Dedicated to Professor Feng Qinglai ( China University of Geosciences, Wuhan, Hubei Province, China).
Type material: Holotype: one right valve, Fig. 4I View Fig , UPMC P6M2750 , sample 08BAN50 . Paratype: one left valve, Fig. 4J View Fig , UPMC P6M2751 , sample 08BAN60 .
Type locality: Bálvány North section, Bükk Mountains, Hungary .
Type horizon: Level 1, Nagyvisnyó Limestone Formation , Changhsingian, Upper Permian .
Material.—7 isolated valves and 2 broken carapaces, samples 08BAN47, 50, 51, 56, 60 (see Fig. 2B), levels 1, 2, 4, 6, Nagyvisnyó Limestone Formation, Bálvány North section, Hungary, Changhsingian, Upper Permian.
Diagnosis. —A species of Hollinella with an elongated carapace, a small H/L ratio, a L 1 vertical and thin, bulbous L 2 and L 3, and a well−expressed L 4, which is connected ventrally with L 1.
Dimensions.—L 240–780 µm; H 125–400 µm.
Description.—Carapace elongated (H/L 0.47–0.53); DB long and straight; ACA 110–120°; AB with large radius of curvature, maximum of curvature located at mid−H; VB slightly convex to nearly straight; PB with small radius of curvature, maximum of curvature located high, near to the DB; PCA quite rectangular; carapace flattened along free margins; L 1 thin and quite vertical connected ventrally to L 4 which is always expressed; L 2 bulbous, located at mid−H, it could be subdivided vertically into two nodes connected ventrally; L 3 bulbous and rounded, generally not overpassing DB; maximum of H located behind anterior third of L; ornamentation not observed. Internal features unknown.
Discussion.—The preservation is not very good. All the specimens are represented by isolated valves. Many authors have attributed Lower Triassic specimens of Hollinella from South China ( Zheng 1976; Wang 1978; Wei 1981; Hao 1992, 1994) and from the Bükk Mountains ( Kozur 1985b) to the species Hollinella tingi ( Patte, 1935) . Although these specimens without doubt belong to the genus Hollinella they are unlikely H. tingi (see discussion in Crasquin−Soleau et al. 2004a). In most cases, the specimens from the Lower Triassic are too corroded to allow a precise attribution. H. fengqinglaii sp. nov. described here differs from “ Hollinella tingi ” sensu Wang (1978) and sensu Wei (1981) from the Lower Triassic of South China in its more elongated carapace and absence of nodes on L 3. H. fengqinglaii sp. nov. differs from H. panxiensis Wang, 1978 from the Upper Permian of South China in its vertical L 1 and rounded L 3 (elongated in H. panxiensis ). The lateral view of H. fengqinglaii sp. nov. is close to H. derini Gerry and Honigstein, 1987 from the Upper Permian of Israel ( Gerry et al. 1987). This last species has a more elongated L 2 and L 1 is not clearly connected to ventral lobe. The specimen of identified by Kozur (1985a: pl. 13: 3) as Hollinella tingi is incomplete and has a larger posterior border and a more bulbous L 3.
Stratigraphic and geographic range.—Bálvány North section, levels 1, 2, 4, 6, samples 08BAN47, 50, 51, 56, 60 (see Fig. 2B), Nagyvisnyó Limestone Formation, Changhsingian, Upper Permian.
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