Olgaorlovella davydovi, 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 : 50

Olgaorlovella davydovi n. gen. n. sp.

Figures 12.7 , 24.1-24.4, 24.7, 24. 10 , 35.1-35.5, 35. 8 , 36.13

zoobank.org/ CA7ABCA4-554E-4057-83E6-60F034611221

? 2008 Pseudoagathammina dublicata (Lipina) ; Filimonova, pl. 2, fig. 19.

? 2010 Pseudoagathammina regularis ; Filimonova, pl. 2, fig. 21.

v. 2013 Orthovertellopsis ; Brose, Lucas and Krainer, fig. 6.12.

v. 2013 b Neodiscus ? sp. 2; Vachard, Krainer and Lucas, p. 348 (no illustration).

Etymology. For Dr. V. Davydov, Boise State University, to honor his knowledge of the International Code of Zoological Nomenclature.

Holotype. NMMNH P67954 ; Figure 24.10 ; sample SAR 11-2 .

Paratypes. NMMNH P-67595-67599; Figure 24.1- 4, 24.6-7 .

Material. 45 specimens.

Locus Typicus. NMMNH locality 8903; San Andres Formation reference section in the San Andres Mountains near Rhodes Canyon (New Mexico).

Stratum Typicum. Late? Kungurian (latest Leonardian).

Diagnosis. Ovoid to subspherical test with a coiling transitional from streptospiral to oscillating to planispiral.

Description. Ovoid to subspherical test. Umbilicus absent. Sutures absent. Whorls involute. Lateral sides strongly inflated. Peripheral margin rounded. D = (0.35-0.400)- 0.43-0.58 mm; w = 0.25-0.46 mm; w/D = 0.60-0.87 (0.95); whorls: (rarely 3.5)-4-6; p = (0.06)- 0.08-0.09 mm; h = (0.05-0.06)- 0.07-0.11 mm; s = 0.001 mm.

Comparisons. O. davydovi differs from O. regularis by the more ovoid test, higher lumen and more whorls. A related taxon might be Agathammina sp. sensu Flügel et al. (1984, plate 32, figure 7; plate 34, figures 1, 2, 3). It is similarly morphologically transitional between Glomomidiella and Praeneodiscus and/or Neodiscus , but devoid of a relationship with true Agathammina , as well as late Midian (latest Middle Permian) in age.

Occurrence. Late? Kungurian (latest Leonardian) of New Mexico (San Andres Formation, reference section: samples SAR 8a-27, SAR(2) 11-1, SAR 11-2, SAR 11-3, SAR(2) 11-3, SAR(2) 11-3a, SAR(2) 11-4, SAR(2) 11-5, SAR 11-6, SAR 11-6b, SAR(2) 11-7, SAR(2) 11-8, SAR 11-9, SAR 11-10, SAR 11-11, SAR 11-12, SAR(2) 11-13, SAR(2) 11- 14, SAR(2) 11-15, SAR(2) 11-16, SAR(2) 11-7, SAR 11-18, SAR 11a-2, SAR 11a-3, SAR 11a-7, SAR 11a-8, SAR 11a-11, SAR 11a-14, SAR 11a- 15, SAR 13-4).

Figures

FIGURE 12. 1-8. Tubiphytes epimonellaeformis n. sp. 1. NMMNH P-67517, holotype. San Andres Fm. Sample SAR(2) 12-2. 2. NMMNH P-67518, paratype. San Andres Fm. Sample SAR(2) 12-3a. 3. NMMNH P-67519, paratype. San Andres Fm. Sample SAR(2) 12-3. 4. NMMNH P-67520, paratype. San Andres Fm. Sample SAR(2) 11-9. 5. NMMNH P-67521, paratype. San Andres Fm. Sample SAR(2) 12-12. 6. NMMNH P-67522, paratype. San Andres Fm. Sample SAR(2) 12-8. 7. NMMNH P-67523, paratype with Olgaorlovella davydovi n. gen. n. sp. (paratype; top right). San Andres Fm. Sample SAR(2) 11-8. 8. NMMNH P-67524, paratype. San Andres Fm. Sample SAR(2) 12-13.

FIGURE 24. 1-4, 7, 10. Olgaorlovella davydovi n. gen. n. sp. 1. NMMNH P-67595, paratype. Axial section. San Andres Fm. Sample SAR 11-15. 2. NMMNH P-67596, paratype. Axial section. San Andres Fm. Sample SAR 11a-7. 3. NMMNH P-67597, paratype. Axial section. San Andres Fm. Sample SAR 11-8. 4. NMMNH P-67598, paratype. Axial section. San Andres Fm. Sample SAR 11-12. 7. NMMNH P-67599, paratype. Subaxial section. San Andres Fm. Sample SAR 11-6b. 10. NMMNH P-67594, holotype. Axial section. San Andres Fm. Sample SAR 11-2. 5-6, 9, 11. Orthovertellopsis calcitornellaeformis n. gen. n. sp. 5. NMMNH P-67575, paratype. Oblique section showing the costae. San Andres Fm. Sample SAR 12-8. 6. NMMNH P-67574, holotype. Transverse section with Olgaorlovella davydovi n. gen. n. sp. San Andres Fm. Sample SAR 11-10. 9. NMMNH P-67592, paratype. Oblique section. San Andres Fm. Sample SAR 11a-13. 11. NMMNH P-67593, paratype. Subaxial section. San Andres Fm. Sample SAR 11-7a. 8, 12. Tubiphytes epimonellaeformis n. sp. 8. Subaxial section. San Andres Fm. Sample SAR 12-1. 12. Subaxial section difficult to distinguish from T. obscurus Maslov, 1956. San Andres Fm. Sample SAR 3-3. Scale bars equal 0.10 mm.

FIGURE 35. 1-5, 8. Olgaorlovella davydovi n. gen. n. sp. 1. Axial section. San Andres Fm. Sample SAR 11a-11. 2. Axial section. San Andres Fm. Sample SAR 11a-8 (already illustrated in Brose et al., 2013, figure 6. 12). 3. Subaxial section. San Andres Fm. Sample SAR 11a-15. 4. Axial section. San Andres Fm. Sample SAR 11a-14. 5. Axial section. San Andres Fm. Sample SAR 11a-3. 8. Axial section. San Andres Fm. Sample SAR 11-6. 6-7, 13. Orthovertellopsis calcitornellaeformis n. gen. n. sp. 6. Subtransverse section. San Andres Fm. Sample SAR 11a-16. 7. Transverse section. San Andres Fm. Sample SAR 11-16. 13. Oblique section. San Andres Fm. Sample SAR 11a-5. 9, 11, 14. Glomomidiella infrapermica n. sp. 9. Axial section showing the proloculus. San Andres Fm. Sample SAR 11-14. 11. Subtransverse section. Yeso Group. Sample MG(2) 10-7b. 14. Axial section relatively well preserved (dark wall). Yeso Group. Sample MG(2) 12-7. 10, 12. Orthovertellopsis protaeformis n. gen. n. sp. 10. Axial section. Yeso Group. Sample MG(2) 10-14. 12. Subaxial section. Yeso Group. Sample MG(2) 10-6. Scale bars equal 0.10 mm.

FIGURE 36. 1-12, 16. Glomomidiella infrapermica n. sp. 1. Axial section. Yeso Group. Sample MG(2) 10-9. 2. Subaxial section. San Andres Fm. Sample MLY(2) 5a-15. 3. Oblique subaxial section. Yeso Group. Sample MG(2) 10-8. 4. Subtransverse section. Yeso Group. Sample MG 10-7. 5. Broken subaxial section. Yeso Group. Sample MG(2) 10-10. 6. Subaxial section. Yeso Group. Sample MG(2) 10-4. 7. Axial section. Yeso Group. Sample MG(2) 10-5. 8. Oblique subaxial section. Yeso Group. Sample MG(2) 10-3. 9. Subaxial section. Yeso Group. Sample MG(2) 10-11. 10. Axial section. Yeso Group. Sample MG 10-7a. 11. Subtransverse section. Yeso Group. Sample MG(2) 10-7c. 12. Subaxial section. Yeso Group. Sample MG(2) 10-13 (already illustrated in Lucas et al., 2013b, figure 8I). 16. Poorly preserved subaxial section. San Andres Fm. Sample MLY 6-26. 13. Olgaorlovella davydovi n. gen. n. sp. Axial section. San Andres Fm. Sample SAR(2) 11-7. 14-15. Geinitzina indepressa Cherdyntsev, 1914. 14. Oblique subaxial section. San Andres Fm. Sample SAR(2) 11-2. 15. Subaxial section. San Andres Fm. Sample SAR(2) 19-1. 17. “Frondicularia” aff. turae Baryshnikov in Baryshnikov, Zolotova and Kosheleva, 1982. Axial section. Yeso Group. Sample MG 13f.