Globivalvulina parapiciformis, Vachard, Krainer & Lucas, 2015

Vachard, D, Krainer, K & Lucas, SG, 2015, Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA), Palaeontologia Electronica (English ed.) 3 (8), pp. 1-77 : 30

Globivalvulina parapiciformis n. sp. Figures. 22.6 , 25.3 , 26.1, 26.4-26.7, 26.9, 26.11- 26.14, 26.16-26.19, 26.21, 26.23, 26.25, 27.10, 27.11, 28.13, 30.5

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v. 2003 Globivalvulina spp. ; Krainer, Vachard and Lucas, pl. 6, figs. 18, 22, 23, 28, 29, 32.

v. 2003 Globivalvulina bulloides Brady ; Krainer, Vachard and Lucas, pl. 7, figs. 3, 9, 15, 16, 17, 18, 19, 32.

v. 2009 Globivalvulina cf. apiciformis Zolotova and Baryshnikov ; Krainer, Lucas and Vachard, pl. 5, figs. 17, 18, 19, 20.

v. p. 2013 Globivalvulina ; Brose, Lucas and Krainer, fig. 6.6 (only, non fig. 6.7 = G. retroseptata n. sp.).

v. 2013 b Globivalvulina cf. apiciformis Zolotova and Baryshnikov ; Vachard, Krainer and Lucas, p. 348 (no illustration).

Etymology. Relatively similar to G. apiciformis

Zolotova in Zolotova and Baryshnikov, 1980.

Holotype. NMMNH P-67551; Figure 22.6 ; sample

MLY 4-3.

Paratype. NMMNH P-67552; Figure 25.3 .

Material. 50 sections.

Locus Typicus. NMMNH locality 8897; San Andres Formation, McLeod Hills, southern Caballo Mountains (New Mexico).

Stratum Typicum. Middle? Kungurian (late Leonardian).

Diagnosis. Small Globivalvulina with an unilayered wall, early planispirally coiled axis of biseriality, hemispherical to trapezoidal chambers and basal aperture with long funnel.

Description. Test small, subnautiloid; D = (0.17)- 0.22-0.53 mm; w = 0.18-0.43 mm; w/D = 0.91-1.08. Subplanispirally coiled axis of biseriality. Proloculus spherical, small to large-sized (0.02-0.03 up to 0.06-0.08 mm), not inserted, not prominent. Dorsal side moderately convex. Sutures poorly- to moderately marked. Whorls: 1-1.5. Peripheral margin rounded. Lateral sides of spire inflated. Umbilicus absent. Chambers: 5-6 (rarely 7-8) pairs, hemispherical to trapezoidal; relatively irregular in shape; h = (rarely 0.06)-0.10-0.13 (rarely 0.17- 0.22) mm. Septa complete, well curved, in the continuity of the wall. Ventral side concave. Aperture basal with a long funnel. Oral valvula often well developed. Wall microgranular, moderately thick; s = 0.01-0.02 mm.

Comparison. Differs from G. apiciformis , a coeval species from the Kungurian (Filipovsky horizon) of the Urals ( Russia), by less chambers for a similar diameter, a smaller proloculus, higher chambers, and a more compressed axial section. It differs from G. sossipatrovae Baryshnikov in Zolotova and Baryshnikov, 1980 by a longer funnel, and from G. uncinata Zolotova in Zolotova and Baryshnikov, 1980 by larger dimensions and thinner walls. It is probable that these three latter Kungurian species and G. parapiciformis n. sp. constitute a morphological and phylogenetic group of species or a plexus.

Occurrence. Kungurian (late Leonardian) of New Mexico (San Andres Formation, McLeod Hills (MLY) and reference section in the San Andres Mountains (SAR): samples MLY 2-1, MLY 3-4, MLY 3-7, MLY 3-9, MLY 4-3, MLY 4-4, MLY 4-10, MLY(2) 4-11, MLY 4-14, MLY 5-7c, MLY 5-7d, MLY 5-11, MLY 5-11a, MLY 5-20a, MLY 5-24a, MLY(2) 5a-6a, MLY 6-2, MLY 6-3, MLY 6-4, MLY 6-9, MLY 6-11a, MLY 6-12a, MLY 6-16, MLY(2) 6-17, MLY 6- 24, MLY 6-31, MLY 8-2, SAR 7-6, SAR(2) 8-1, SAR 8a-8a, SAR(2) 12-18, SAR 13-9, SAR(2) 13a-4a, SAR(2) 13a-5, SAR 13a-6, SAR 13a-7, SAR 20-3, SAR 20-4).

Figures

FIGURE 22. 1, 3. Glomomidiella infrapermica n. sp. 1. NMMNH P-67600, holotype. Subtransverse section. Yeso Group. Sample MG 10-22. 3. NMMNH P-67601, paratype. Subtransverse section. Yeso Group. Sample MG 10-25. 2. Orthovertellopsis proteaeformis n. gen. n. sp., NMMNH P-67570, holotype. Axial section with relatively well-preserved wall. Yeso Group. Sample MG 10-21. 4, 7-8, 10, 12-14. Praeneodiscus convexus n. gen. n. sp. 4. NMMNH P-67606, holotype. Axial section. Yeso Group. Sample MG 10-24. 7. NMMNH P-67607, paratype. Axial section. San Andres Fm. Sample MLY 5-13 (already illustrated in Brose et al., 2013, figure 6. 11). 8. NMMNH P-67608, paratype. Axial section. San Andres Fm. Sample MLY 5-4. 10. NMMNH P-67609, paratype. Axial section with a relatively preserved wall. San Andres Fm. Sample MLY 5-7. 12. NMMNH P-67610, paratype. Axial section. San Andres Fm. Sample MLY 5-7a. 13. NMMNH P-67611, paratype. Axial section. San Andres Fm. Sample MLY 5-30. 14. NMMNH P-67612, paratype. Axial section. San Andres Fm. Sample MLY 5-21. 5. Tubiphytes epimonellaeformis n.sp. Subtransverse section. San Andres Fm. Sample SAR 8a-22. 6. Globivalvulina parapiciformis n. sp. NMMNH P-67551, holotype. Transverse section. San Andres Fm. Sample MLY 4-3. 9. Pseudospira aff. ishimbaica (Lipina, 1949). Subtransverse section. Yeso Group. Sample MG 10-26. 11. Hemigordiellina? cf. simplex (Harlton, 1928). Axial section. San Andres Fm. Sample MLY 6-28. 15. Eotuberitina reitlingerae Miklukho-Maklay, 1958. Axial section. San Andres Fm. Sample MLY 4-5. Scale bars equal 0.10 mm.

FIGURE 25. 1-2. Globivalvulina novamexicana n. sp. 1. NMMNH P-67561, holotype. Subaxial section. San Andres Fm. Sample MLY 6-17. 2. NMMNH P-67563, paratype. Subaxial section. San Andres Fm. Sample MLY 6-29a. 3. Globivalvulina parapiciformis n. sp. NMMNH P-67552, two paratypes. Two oblique sections. San Andres Fm. Sample MLY 6-11a. 4. Nestellorella? sp. Subaxial section. San Andres Fm. Sample MLY 1-1. 5. Protonodosaria? sp. Subaxial section. San Andres Fm. Sample MLY 3-5. 6-7, 10, 17-19. Nodosinelloides longa (Lipina, 1949). 6. Axial section. San Andres Fm. Sample SAR 8a-4a. 7. Subaxial section. San Andres Fm. Sample SAR 8a-8. 10. Axial section. San Andres Fm. Sample SAR 8a-17 (already illustrated by Brose et al., 2013, figure 6.5). 17. Axial section. San Andres Fm. Sample SAR 11a-6. 18. Axial section. San Andres Fm. Sample SAR 11a-9. 19. Axial section. San Andres Fm. Sample SAR 12-4. 8-9, 12-14. Geinitzina indepressa Cherdyntsev, 1914. 8. Axial section. San Andres Fm. Sample SAR 8a-11. 9. Axial section. San Andres Fm. Sample SAR 8a-14. 12. Subaxial section. San Andres Fm. Sample SAR 8a-7. 13. Subaxial section. San Andres Fm. Sample SAR 11-13. 14. Oblique subaxial section. San Andres Fm. Sample SAR 11a-10. 11, 15, 20?, 21. Nodosinelloides netjaschewi (Cherdyntsev, 1914). 11. Axial section. San Andres Fm. Sample SAR 11-17. 15. Axial section. San Andres Fm. Sample SAR 11-19/19a. 20. Axial section. San Andres Fm. Sample SAR 20.2. 21. Axial section. San Andres Fm. Sample SAR 13a-2. 16. Nodosariata indet. cf. Dentalina cf. ninae Grozdilova sensu Chuvashov et al., 1990. Axial section. San Andres Fm. Sample SAR 11a-4. Scale bars equal 0.10 mm.