Ammagnostus antarcticus Bentley, Jago & Cooper 2009 ...

• Main Authors: Smith, Patrick M., Paterson, John R., Brock, Glenn A.
• Format: Text
• Language: unknown
• Published: Zenodo 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Trilobita; Agnostida; Agnostidae; Ammagnostus; Ammagnostus antarcticus; Paterson; Antarc*; antarcticus
• Online Access: https://dx.doi.org/10.5281/zenodo.5980800; https://zenodo.org/doi/10.5281/zenodo.5980800

Ammagnostus antarcticus Bentley, Jago & Cooper, 2009 Fig. 5 ?1967 Agnostoglossa bassa; Öpik, p. 146, pl. 60, figs 6–14, text-fig. 44. ?1989 Ammagnostus sp. indet.; Wang, Mills, Webby & Shergold, p. 111, fig. 4A–D. 2009 Ammagnostus antarcticus; Bentley, Jago & Cooper, p. 171, 172, fig. 4A–I. Material. Nineteen cephala and eight pygidia figured, CPC42177–CPC42203. 26 cephala and eleven pygidia not figured (mostly fragments). Description. Cephalon and pygidium each attaining about 2.6 mm in length; nonscrobiculate; surface smooth. Cephalon subquadrate in outline, about 94% as long as wide, nonspinose, moderately convex; border reasonably wide (sag., exsag.), flattened; border furrow well developed; preglabellar median furrow faintly developed or absent. Glabella 70–73% (mean 71%, n = 4) as long (sag.) as cephalon. Small anterior lobe clearly defined, semiovate in shape, obtusely angular to rounded anteriorly, occupying 29–30% (mean 30%, n = 4) of glabellar length. F3 deeply incised, strongly bowed ... : Published as part of Smith, Patrick M., Paterson, John R. & Brock, Glenn A., 2018, Trilobites and agnostids from the Goyder Formation (Cambrian Series 3, Guzhangian; Mindyallan), Amadeus Basin, central Australia, pp. 1-67 in Zootaxa 4396 (1) on pages 12-14, DOI: 10.11646/zootaxa.4396.1.1, http://zenodo.org/record/1202723 ...