Bailiella tenuicincta

• Main Authors: Unger, Tanja, Hildenbrand, Anne, Stinnesbeck, Wolfgang, Austermann, Gregor
• Format: Other/Unknown Material
• Language: unknown
• Published: 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Trilobita; Ptychopariida; Conocoryphidae; Bailiella; Bailiella tenuicincta; Canada; Manuels River; Rudolph; Newfoundland
• Online Access: https://zenodo.org/record/7477290; https://doi.org/10.5281/zenodo.7477290

Bailiella tenuicincta (Linnarsson, 1879) (Fig. 9) Conocoryphe tenuicincta Linnarsson, 1879: 18, 19, pl. 2, figs 23-25. Bailiella tenuicincta – Westergård 1950: 26, 27, pl. 5, figs 6a-d, 7a, b, 8a, b, 9 (?). — Hutchinson 1962: 105, 106, pl. 15, figs. 3, 4a- d. — Rudolph 1990: 19, text-fig. 4; 1994: 192, 193, pl. 23, fig. 3 (?). — Weidner & Nielsen 2014: 74, fig. 43B. Bailiella aff. B. tenuicincta – Martin & Dean 1988: 19, pl. 2, figs 7, 12. Bailiella cf. tenuicincta – Chirivella Martorell et al. 2015: 177, figs 4A-I; p. 179, figs 5A, B. LECTOTYPE. — Specimen no. SGU 4524, Swedish Geological Survey (Sveriges Geologiska Undersökning), Uppsala, Sweden, originally figured in Linnarsson (1879) and designated as lectotype by Westergård (1950). From the Exsulans Limestone Bed, Tomagnostus gibbus Zone, Gislöv, on the shore 1 km south of Brantevik, Scania, Sweden. DIAGNOSIS. — Anterior margin narrow; glabella with three pairs of shallow to faint furrows; occipital ring with node; dense fine granulose ornamentation with scattered small granules (based on Linnarsson 1879, with modifications). MATERIAL EXAMINED. — Four cranidia of Bailiella tenuicincta (NFM F-2972; NFM F-3168; NFM F-3169; NFM F-3200). All specimens range between 8.52 and 16.67 m (Fig. 2) of the Manuels River Formation, type locality, Conception Bay South, Newfoundland, Canada. OCCURRENCE. — Bailiella tenuicincta is a rare middle Cambrian taxon, documented from southeastern Canada, eastern Newfoundland, in the Paradoxides hicksi and Paradoxides davidis Zones (Hutchinson 1962; Martin & Dean 1988). The taxon also occurs in Sweden (Ptychagnostus (Triplagn.) gibbus Zone; Westergård 1950, 1953), Bornholm in Denmark, (Ptychagnostus (Triplagn.) gibbus Zone; Westergård 1950; Agnostus atavus Zone; Weidner & Nielsen, 2014) and Spain (upper Badulesia tenera to lower Badulesia granieri zones; Chirivella Martorell et al. 2015). DESCRIPTION The cranidia range from 7.0 mm to 34.0 mm in width and 4.4 mm to 18.0 mm in length, while the glabella varies from 2.5 ...