Costacopluma texana Armstrong, Nyborg, Bishop, Osso-Morales & Vega 2009

Costacopluma texanaArmstrong, Nyborg, Bishop, Ossó-Morales & Vega, 2009 (Fig. 16; Table 1; Appendix 1G, H) Costacopluma texana Armstrong, Nyborg, Bishop, Ossó-Morales & Vega, 2009: 756, figs 5.14-5.20; 6.1. — Martínez-Díaz et al. 2016: figs 5.14, 6.6. TYPE MATERIAL. — Holotype. United States • 1 specimen; Texas, Limestone County, quarry c. 2 miles west of Mexia (c. 31°40’12”N, 96°34’11”W); Wills Point Formation, Mexia Clay Member; Paleocene (upper Danian); NPL 31172. Paratypes. United States • 1 specimen; same as for the holotype; NPL 31173 • 1 specimen; idem; NPL 31174 • 1 specimen; idem; NPL 31175 • 1 specimen; idem; NPL 31176 • 1 specimen; idem; MGSB 75425. ADDITIONAL MATERIAL EXAMINED. — United States • 6 specimens; Texas, Limestone County, Hanson Quarry; Wills Point Formation, Mexia Clay Member; Paleocene (upper Danian); MMNS IP-7396. TYPE HORIZON. — Mexia Clay Member of the Wills Point Formation, upper Danian. TYPE LOCALITY. — Quarry c. 2 miles west of Mexia (c. 31°40’12”N, 96°34’11”W), Limestone County, Texas, United States. DIAGNOSIS. — Referral is made to Armstrong et al. (2009: 756). MEASUREMENTS. — See Table 1. DESCRIPTION Referral is made to Armstrong et al. (2009: 756). REMARKS Costacopluma texana is morphologically close to C. nicksabani n. sp., but differs in several aspects. For details see the comparisons under C. nicksabani n. sp.