FIGURE 4. Cloacaspis spp. A. Cloacaspis ekphymosa Fortey, 1974, USNM 144232 in Phylogenetic analysis and revision of the trilobite subfamily Balnibarbiinae (Olenidae)

• Main Author: Hopkins, Melanie J.
• Format: Still Image
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Trilobita; Ptychopariida; Olenidae; Cloacaspis; Lost River; Valhallfonna; Seward Peninsula; Alaska
• Online Access: https://dx.doi.org/10.5281/zenodo.5369861; https://zenodo.org/record/5369861

FIGURE 4. Cloacaspis spp. A. Cloacaspis ekphymosa Fortey, 1974, USNM 144232. Collected from the Lost River Area on Seward Peninsula, Alaska, and previously identified as Triarthrus sp. (Ross, 1965). Arrow pointing to postpalpebral furrow. B. Anterior border of Cloacaspis ceryx anataphra (Fortey, 1974), AMNH- FI-101655. Black arrows pointing to faint anterior border pits on internal mold. C. Cloacaspis ceryx anataphra (Fortey, 1974), AMNH-FI-101655. Collected from PO-18 of the Olenidsletta Member of the Valhallfonna Formation (Kröger et al., 2017). D) Cloacaspis ceryx ceryx (Fortey, 1974), AMNH-FI-101657. Close-up of E, anterior glabellar lobe and F, posterior wing, showing presence of fine granulation of recently prepared surface (white arrow) and lack of granulation on exposed and slightly eroded surface (black arrow). Collected from bed PO-18 of the Olenidsletta Member of the Valhallfonna Formation (Kröger et al., 2017). Scale bars = 1 mm except A and D, where scale bar = 5 mm. : Published as part of Hopkins, Melanie J., 2019, American Museum Novitates 2019 (3928) on page 1, DOI: 10.1206/3928.1, http://zenodo.org/record/5369854