Balnibarbi erugata subsp. sombrero

• Main Author: Hopkins, Melanie J.
• Format: Text
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Trilobita; Ptychopariida; Olenidae; Balnibarbi; Balnibarbi erugata; Balnibarbi erugata sombrero fortey, 1974; Svalbard; Ny Friesland; Hinlopenstretet; Valhallfonna; Norsk Polarinstitutt; Spitsbergen
• Online Access: https://dx.doi.org/10.5281/zenodo.5461568; https://zenodo.org/record/5461568

Balnibarbi erugata sombrero (Fortey, 1974) Figure 2F Balnibarbi sombrero Fortey, 1974: 32, pl. 6, fig. 1-4. HOLOTYPE: Cranidium, PMO NF 835 (figured in Fortey, 1974: pl. 6, fig. 1-2). TYPE LOCALITY: Profilstranda, Olenidsletta Member, Valhallfonna Formation, Ny Friesland, Spitsbergen, Svalbard. STRATIGRAPHIC RANGE: Middle of trilobite zone V 1b (Fortey, 1980). This zone coincides with the lower Oepikodus evae conodont zone and Pendeograptus fruticosus graptolite zone within the upper Floian (fig. 1; see also Kröger et al., 2017). DIAGNOSIS: Balnibarbi erugata species with relatively long (sag.) preglabellar field (>0.35 length of glabella) and smooth exoskeletal surface. Known only from cranidia. : Published as part of Hopkins, Melanie J., 2019, Phylogenetic analysis and revision of the trilobite subfamily Balnibarbiinae (Olenidae), pp. 1 in American Museum Novitates 2019 (3928) on page 1, DOI: 10.1206/3928.1, http://zenodo.org/record/5369854 : {"references": ["Fortey, R. A. 1974. The Ordovician trilobites of Spitsbergen. I. Olenidae. Norsk Polarinstitutt Skrifter 160: 1 - 129.", "Fortey, R. A. 1980. The Ordovician trilobites of Spitsbergen. III. Remaining trilobites of the Valhallfonna Formation. Norsk Polarinstitutt Skrifter 171: 163.", "Kroger, B., S. Finnegan, F. Franeck, and M. J. Hopkins. 2017. The Ordovician succession adjacent to Hinlopenstretet, Ny Friesland, Spitsbergen. American Museum Novitates 3882: 1 - 28."]}