Jincella Snajdr 1957

• Main Authors: Unger, Tanja, Hildenbrand, Anne, Stinnesbeck, Wolfgang, Austermann, Gregor
• Format: Other/Unknown Material
• Language: unknown
• Published: 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Trilobita; Agnostida; Solenopleuridae; Jincella; Canada; Howell; Manuels River; Newfoundland
• Online Access: https://zenodo.org/record/7477272; https://doi.org/10.5281/zenodo.7477272

Genus Jincella Šnajdr, 1957 Jincella Šnajdr, 1957: 241. TYPE SPECIES. — Solenopleura prantli Růžička, 1946, by original designation. DIAGNOSIS. — Glabella bluntly conical, not reaching frontal border; three pairs of shallow glabellar furrows; arched preglabellar area; arched cephalic border, widest in front of cranidium; ornamentation covering cranidium except for furrows and palpebral lobes; occipital ring with small node; thorax of 14 segments; pygidium small, with four to five rings on axis (based on Šnajdr 1957, 1958; Álvaro et al. 2004, with modifications). REMARKS The genus Jincella is closely related to the genus Solenopleura Angelin, 1854. Jincella has variously been treated as a junior synonym of Solenopleura (e.g., Rushton & Berg-Madsen 2002), while other authors (e.g., Geyer 1998; Álvaro et al. 2004) separated the two based on the relative convexity of the glabella, fixigenae, anterior border and eye lobes. Ornamentation is another reliable diagnostic characteristic in Jincella, even though this has been questioned by Fletcher (2007), who ranked Jincella as a subgenus to Brunswickia Howell, 1937. Based on the original description of Howell (1937) and images of the specimens assigned to the genus Brunswickia, the shape of the cranidium in Brunswickia is narrower than that of Jincella. We here follow Álvaro et al. (2004) and interpret the presence of ornamentation of Jincella as a diagnostic characteristic. We therefore maintain the separation of Jincella from Brunswickia and Solenopleura and treat the genus as a member of Solenopleuridae, thus following e.g., Harrington et al. (1959), Courtessole (1973), Geyer (1998) and Álvaro et al. (2004). Published as part of Unger, Tanja, Hildenbrand, Anne, Stinnesbeck, Wolfgang & Austermann, Gregor, 2022, Biostratigraphy and taxonomy of polymerid trilobites of the Manuels River Formation (Drumian, middle Cambrian), Newfoundland, Canada, pp. 1051-1087 in Geodiversitas 44 (33) on page 1060, DOI:10.5252/geodiversitas2022v44a33, ...