Palimphemus seymourensis Schwarzhans & Mors & Engelbrecht & Reguero & Kriwet 2017, sp. nov.

• Main Authors: Schwarzhans, Werner, Mors, Thomas, Engelbrecht, Andrea, Reguero, Marcelo, Kriwet, Jurgen
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Gadiformes; Gadidae; Palimphemus; Palimphemus seymourensis; Antarc*; Antarctica; Seymour Island
• Online Access: https://doi.org/10.5281/zenodo.10883152; http://treatment.plazi.org/id/041B87CAFFAEFFFBD642F923E227D894

Palimphemus seymourensis sp. nov. (Figs 4G—M, 6G—I) Material. Holotype: NRM-PZ P.15973 (Figs 4G—I, 6G—I). Paratypes: six specimens, NRM-PZ P.15974—15975 (Fig. 4J—M). Occurrence. Telm 5 unit; ‘ Natica horizon’, Cucullea I member, La Meseta Formation, late Ypresian, early Eocene. Site IAA 2/95, Seymour Island, Antarctica. Etymology. Named after the type locality Seymour Island in Antarctica. Diagnosis. Outline droplet-shaped with broadly rounded anterior rim and slightly elevated predorsal region. OL: OH = 1.8—1.9. Inner face moderately convex. Sulcus narrow, with moderately widened collum and distinct, but short pseudocolliculum. CaL:OsL (measured from centre of collum) = 1.2—1.35. Colliculi often reduced towards outer margin, particularly ostial colliculum. Ventral furrow well developed, close to ventral rim of otolith. Description. Moderately elongate and moderately thick droplet-shaped otoliths of up to 4.5 mm in length (holotype 4.5 mm long). OH:OT = 2.1—2.5. Dorsal rim highest anteriorly above ostial collum in a broadly rounded predorsal angle, somewhat undulating, posteriorly regularly declining without prominent angle. Ventral rim smooth, regularly curved, deepest below rear part of ostium. Anterior rim broadly rounded, with its tip mostly below ostium; posterior rim tapering with rounded tip at level of cauda. Inner face moderately convex with slightly supramedian, narrow and rather shallow sulcus. Ostium slightly shorter than cauda and slightly narrower. Ostial and caudal colliculi well marked, with relatively wide collum in between and often reduced towards anterior and posterior tips of otolith. Collum somewhat narrowed from ventral with short but distinct pseudocolliculum. Dorsal depression narrow, with indistinct dorsal margin; ventral furrow well developed and close to ventral rim of otolith. Outer face slightly convex to nearly flat, with some radial furrows coalescing in a shallow umbo opposing the collum of the inner face. Remarks. Otoliths of P. seymourensis vary slightly in the expression of ...