Bradyfallotaspis sekwiensis Gapp, Lieberman, Pope & Dilliard, 2011, n. sp. ...

• Main Authors: Gapp, Wesley, Lieberman, Bruce S., Pope, Michael C., Dilliard, Kelly A.
• Format: Text
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Trilobita; Redlichiida; Archaeaspididae; Bradyfallotaspis; Bradyfallotaspis sekwiensis; Mackenzie mountains; Northwest Territories
• Online Access: https://dx.doi.org/10.5281/zenodo.6189860; https://zenodo.org/doi/10.5281/zenodo.6189860

Bradyfallotaspis sekwiensis n. sp. (Fig. 5.1–5.7) ? Bradyfallotaspis sp. 3 FRITZ, 1973, p. 11, pl. 6, figs. 25–27. Type material. Holotype PWNHC-2009.20.18. Paratypes KUMIP 320708-320710 and PWNHC-2009.20.19- 2009.20.20. From Nevadella zone, Early Cambrian, Sekwi Formation, Mackenzie Mountains, Northwest Territories, Canada (Section 1, 175.6– 288 m above base of formation; Section 2 in float). There are a total of six specimens. Etymology. Named after its occurrence in the Sekwi Formation. Diagnosis. Anterior cephalic border (sag.) equal to length (sag.) of LO and L1; preglabellar area absent; ocular lobes not in contact with posterior border furrow. Description. Width of cephalon (tr.) is greater than or equal to twice the cephalic length (sag.); anterior cephalic border length (sag.) is long approximately equal to length (sag.) of LO and L1; preglabellar field is absent; a pit-like structure is visible where ocular ridge contacts L3 and LA in some specimens; width (tr.) of the extraocular area varies from ... : Published as part of Gapp, Wesley, Lieberman, Bruce S., Pope, Michael C. & Dilliard, Kelly A., 2011, New olenelline trilobites from the Northwest Territories, Canada, and the phylogenetic placement of Judomia absita Fritz, 1973, pp. 15-28 in Zootaxa 2918 on pages 19-22, DOI: 10.5281/zenodo.202343 ...