Hemigordius aff. saranensis Baryshnikov, 1982

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 : 52

Hemigordius aff. saranensis Baryshnikov in Baryshnikov, Zolotova and Kosheleva, 1982

Figure 34.1-34.5

? 1982 Hemigordius saranensis Baryshnikov in Baryshnikov, Zolotova and Kosheleva, p. 24-25, pl. 7, fig. 13.

v. 2013b Hemigordius aff. saranensis Baryshnikov in Baryshnikov, Zolotova and Kosheleva; Vachard, Krainer and Lucas, p. 348 (no illustration).

Description. Short glomospiroid initial stage followed by a proportionally long planispiral part. Proloculus spherical, relatively large. Lumina slitshaped or low-crescentic. Wall surface smooth. No umbilici. Whorls involute, partially evolute in some specimens. Lateral sides of spire flat. Peripheral margin rounded. Wall black porcelaneous or often whitish neosparitized. D = 0.15-0.30 mm; w = 0.05- 0.07 mm; w/D = 0.21-0.28; whorls: 5-6; p = 0.01- 0.02-(0.04) mm; h = 0.02-0.04 mm; s = 0.01 mm.

Remark. The observed taxon differs from true H. saranensis by the smaller proloculus and the smaller dimensions for the same number of whorls.

Occurrence. Early Kungurian of Preurals ( Russia). Late? Kungurian (latest Leonardian) of New Mexico (San Andres Fm: samples SAR 11-5a, SAR 11a-12, SAR 11a-12a, SAR(2) 12-11, SAR 13-5a, SAR 13-5d, SAR 13-8, SAR 13-11, SAR 20-5).

Figures

FIGURE 34. 1-5. Hemigordius aff. saranensis Baryshnikov in Baryshnikov, Zolotova and Kosheleva, 1982. 1. Subaxial section. San Andres Fm. Sample SAR 13-5d. 2. Subaxial section. San Andres Fm. Sample SAR 11-5a. 3. Axial section. San Andres Fm. Sample SAR 20-5. 4. Transverse section. San Andres Fm. Sample SAR 11a-12. 5. Subtransverse section. San Andres Fm. Sample SAR 13-11. 6, 10, 17. Orthovertellopsis calcitornellaeformis n. gen. n. sp. 6. Subtransverse section. San Andres Fm. Sample SAR 19-1. 10. Oblique section. San Andres Fm. Sample MLY 8-6. 17. Transverse section. San Andres Fm. Sample SAR(2) 11-10. 7-8. Palaeonubecularia sp. 7. Subtransverse section. San Andres Fm. Sample MLY 5-19. 8. Subtransverse section encrusting a Boueina? crassundia n. sp. San Andres Fm. Sample MLY(2) 5a-19. 9. Pseudospira aff. ishimbaica (Lipina, 1949). Two random sections. San Andres Fm. Sample MLY 6- 23. 11-12. Hemigordellina cf. elegans (Lipina, 1949). 11. Random section. San Andres Fm. Sample SAR 18-3a. 12. Random section. San Andres Fm. Sample SAR 18-3. 13. Ammovertella sp. Transverse section. San Andres Fm. Sample SAR 13-9a. 14. Praeneodiscus convexus n. gen. n. sp. Subaxial section. San Andres Fm. Sample MLY 5-32. 15, 18. Hemigordiellina? aff. simplex (Harlton, 1928). 15. Random section. San Andres Fm. Sample SAR 18-2. 18. Transverse section. San Andres Fm. Sample MLY(2) 4-2. 16. Hemigordellina aff. elegans (Lipina, 1949). Random section. San Andres Fm. Sample SAR 14. 19. Calcitornella cf. elongata Cushman and Waters, 1928a. Subtransverse section. San Andres Fm. Sample MLY(2) 5a-24. Scale bars 1-6, 10-19 equal 0.10 mm.