Pollicipes articulata Collins 1980

• Main Authors: Jagt, John W. M., Zonova, Tatiana D., Jagt-Yazykova, Elena A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Maxillopoda; Pedunculata; Pollicipedidae; Pollicipes; Pollicipes articulata; Alexander Island; Fossil Bluff; Hyperion; Hyperion Nunataks; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/6247744; https://doi.org/10.5281/zenodo.6247744

Pycnolepas articulata Collins, 1980 Original description. Collins (1980: 22, figs 2, 3). Type. Holotype is BAS KG.1657.8b; paratypes are BAS KG.1657.8a, c; all are articulated, near-complete capitula (leg. M.R.A. Thomson). Locality and stratigraphy. Station KG. 1657, northern Hyperion Nunataks, southeastern Alexander Island (Antarctica); Fossil Bluff Formation,?lower Aptian. Associated ammonites and a brachiopod suggest approximate correlation with the Fossil Bluff section, for which an early Aptian age (c. 113 – 112 Ma) was suggested (Thomson, 1974; see also Crame, 1985). Remarks. The type lot represents the only articulated material of Pycnolepas known to date. Pycnolepas articulata is a moderately large species with thin, strongly ridged valves; carina subcylindrical, with rounded parietes; tergum subrhomboidal; scutum elongate-triangular, showing one longitudinal ridge more prominent than other ridges on occludent side of apicobasal ridge; rostrum only partially preserved, apparently reaching half the length of scutum; imbricating plates in three or four whorls, subtriangular and with broadly rounded apex, each having narrow basal ridge with shallow, slit-like median socket. Occurrence. Known only from the type locality; no subsequent records. Published as part of Jagt, John W. M., Zonova, Tatiana D. & Jagt-Yazykova, Elena A., 2007, A review of the brachylepadomorph cirripede genus Pycnolepas, including the first record of an Early Cretaceous species from the Russian Far East *, pp. 33-47 in Zootaxa 1545 on page 36, DOI:10.5281/zenodo.177977