Bulletins of American paleontology . ^ 50 microns. 4,5,7,8. Ewingella guindaensis Pessagno, n. sp 400 Holotype (USNM 164237). NSF 350. Antelope Shale/FiskeCreek Formation. 4. Marker = 10 microns. 5. Marker ^=50 microns. 7. Note rim around mouth of thorax and re-cessed, planiform nature of thoracic velum. Diatom cement-ed to thoracic skirt in lower left in position of marker;marker = 10 microns. 8. Marker = 50 microns. 9. Microsciadiocapsa sutterensis Pessagno, n. sp 409 Paratype (USNM 164238). NSF 350. Antelope Shale/FiskeCreek Formation; marker = 50 microns. 10. ?Sciadiocapsa baileyi Pessagno
Bulletins of American paleontology . ^ 50 microns. 4,5,7,8. Ewingella guindaensis Pessagno, n. sp 400 Holotype (USNM 164237). NSF 350. Antelope Shale/FiskeCreek Formation. 4. Marker = 10 microns. 5. Marker ^=50 microns. 7. Note rim around mouth of thorax and re-cessed, planiform nature of thoracic velum. Diatom cement-ed to thoracic skirt in lower left in position of marker;marker = 10 microns. 8. Marker = 50 microns. 9. Microsciadiocapsa sutterensis Pessagno, n. sp 409 Paratype (USNM 164238). NSF 350. Antelope Shale/FiskeCreek Formation; marker = 50 microns. 10. ?Sciadiocapsa baileyi Pessagno, n. sp 414 Paratype (Pessagno Collection). NSF 482 Dobbins ShaleMember of Forbes Formation. Thoracic mouth at high mag-nification. Note pronounced rim around mouth with tubu-lar pores on its posterior portion (lower right of photo).Marker = 10 microns. 11,12. ?Sciadiocapsa baileyi Pessagno, n. sp 414 Holotype (USNM 164538). NSF 482. Dobbins Shale Memberof Forbes Formation. Marker = 25 microns. Bull. Amer. Paleont., Vol. 56 Plate 29. Bull. Amer. Paleont., Vol. 56 Plate 30
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