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Probolichas kristiae

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Journal Article

Tetralichine Trilobites from the Upper Ordovician of Oklahoma and Virginia and Phylogenetic Systematics of the Tetralichini

Jesse R. Carlucci, Stephen R. Westrop, Lisa Amati
Published: 01 November 2010
Journal of Paleontology (2010) 84 (6): 1099–1120.
DOI: https://doi.org/10.1666/10-012.1
... is revised as a synonym of Amphilichas , and the Tetralichini is defined as clade with three genera: Amphilichas , Probolichas , and Lyralichas Weber, 1948 . Probolichas kristiae from the Bromide Formation and Amphilichas effnensis from the Effna Formation of Virginia are new species. 30 05 2010...
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View PDF for article title, Tetralichine Trilobites from the Upper Ordovician of Oklahoma and Virginia and Phylogenetic Systematics of the Tetralichini
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Figure 9. Tetralichines trilobites; 1, 7–8, 10–12 from the Bromide Formation (Upper Ordovician) of Oklahoma, 2–4 are from the Boda Limestone Formation (Upper Ordovician) of Sweden, 5, 6, 9 are from the Middle Ordovician (Whiterockian) bioherm at Meiklejohn Peak, Nevada. 1, Probolichas kristiae proboscis, dorsal view, ×1.5, OU 12484; 2–4, Amphilichas lineatus (Angelin, 1854, pl. 38, figs. 12, 12a), lectotype cranidium, lateral, anterior, dorsal views, ×6, Ar 6040; 5, 6, 9, Amphilichas cf. A. jukesi (Ross, 1972, pl. 18, figs. 6–8), dorsal view ×5, lateral, anterior views, ×6, USNM 167232c; 7, 8, 11, Amphilichas subpunctatus, dorsal, lateral, anterior views, ×2, OU 12485; 10, Probolichas kristiae (Shaw, 1974, pl. 12, fig. 2) hypostome, dorsal view, ×1.5, OU 8091; 12, A. subpunctatus (Shaw, 1974, pl. 12, fig. 14) pygidium, dorsal view, ×2, OU 5201

Figure 9. Tetralichines trilobites; 1 , 7–8 , 10–12 from the Bromide Fo...

Published: 01 November 2010
, Probolichas kristiae proboscis, dorsal view, ×1.5, OU 12484; 2–4 , Amphilichas lineatus ( Angelin, 1854 , pl. 38, figs. 12, 12a), lectotype cranidium, lateral, anterior, dorsal views, ×6, Ar 6040; 5 , 6 , 9 , Amphilichas cf. A. jukesi ( Ross, 1972 , pl. 18, figs. 6–8), dorsal view ×5, lateral
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Figure 6. ProbolichasPhleger, 1936. All from the Bromide Formation, Upper Ordovician, Oklahoma, except 1, 2 and 3, which are from the Prosser limestone, Upper Ordovician of Minnesota. 1–3, Probolichas robbinsi (Ulrich, 1892, figs. 1a, 1b) holotype cranidium, dorsal, lateral, and anterior views, ×3, USNM 041950; 4–6, Probolichas kristiae n. sp. 4, thoracopygon, dorsal view, ×1, OU 11265; 5, 6, cranidium, lateral and dorsal views, ×1.5, OU 11261

Figure 6. Probolichas Phleger, 1936 . All from the Bromide Formation, Upp...

Published: 01 November 2010
, and anterior views, ×3, USNM 041950; 4 – 6 , Probolichas kristiae n. sp. 4 , thoracopygon, dorsal view, ×1, OU 11265; 5 , 6 , cranidium, lateral and dorsal views, ×1.5, OU 11261
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Figure 7. Tetralichine trilobites. All from the Bromide Formation, Upper Ordovician of Oklahoma, except 1, which is from the Middle Ordovician (lower Maquoketa) of Iowa. 1, Amphilichas rhinoceros (Slocom, 1913, pl. 15, figs. 5, 6) cranidium, dorsal view, ×1.6, FMNH 11181, only the base of the dorsal median lobe spine is visible on the cast; 2, 3, Probolichas kristiae, holotype, lateral view, ×4, dorsal view, ×3, OU 11260; 4, P. kristiae (Shaw, 1974, pl. 12, fig. 17) pygidium, dorsal view, ×1.3, OU 5203; 5, 6, P. kristiae proboscis, dorsal and lateral views, ×2, OU 11262; 7, P. kristiae (Shaw, 1974, pl. 12 fig. 19) cranidium, dorsal view, ×2.5, OU 8096; 8, P. kristiae cranidium, dorsal view, ×3, OU 11263

Figure 7. Tetralichine trilobites. All from the Bromide Formation, Upper Or...

Published: 01 November 2010
of the dorsal median lobe spine is visible on the cast; 2 , 3 , Probolichas kristiae , holotype, lateral view, ×4, dorsal view, ×3, OU 11260; 4 , P. kristiae ( Shaw, 1974 , pl. 12, fig. 17) pygidium, dorsal view, ×1.3, OU 5203; 5 , 6 , P. kristiae proboscis, dorsal and lateral views, ×2, OU 11262; 7
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Figure 8. Oklahoma tetralichines; 1–3 are from the Bromide Formation, 4–10 are from the Viola Springs Formation, both (Upper Ordovician) of Oklahoma. 1. Amphilichas sp. thorax, lateral view, ×1.5, OU 12482; 2. Probolichas kristiae proboscis, dorsal view, ×1.5, OU 12483; 3. P. kristiae pygidium, dorsal view, ×2, OU 11269; 4, Amphilichas cf. A. cucullus hypostome, dorsal view, ×3, OU 12146; 5, 6, 8, A. cf. A. cucullus cranidium, dorsal, lateral, anterior views, ×3, OU 12147; 7, 9, 10, A. cf. A. cucullus cranidium, anterior, dorsal, lateral views, ×4, OU 12149

Figure 8. Oklahoma tetralichines; 1–3 are from the Bromide Formation, 4–...

Published: 01 November 2010
Figure 8. Oklahoma tetralichines; 1–3 are from the Bromide Formation, 4–10 are from the Viola Springs Formation, both (Upper Ordovician) of Oklahoma. 1 . Amphilichas sp. thorax, lateral view, ×1.5, OU 12482; 2 . Probolichas kristiae proboscis, dorsal view, ×1.5, OU 12483; 3 . P