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Paraireiana sinensis
Paraireiana sinensis He Chengquan, 1984
Now Carpatella. Originally Paraireiana, subsequently (and now) Carpatella.
Holotype: He Chengquan, 1984, pl.1, fig.8
Age: Paleocene-Eocene
Description: Tests ventro-dorsally flattened; body outline subcircular to elliptical. Presence of single conspicuous apical [horn] and antapical horns: bases unjoined to test interior; equal in size or not. Apical horn normally larger, cylindrical to conical in shape; apex somewhat pointed or bluntly rounded; 5 to 13.5 µm long. Antapical horns generally smaller (a large one occasionally appears); cylindrical; 5 to 7.5 µm long. No sign of sulcus or cingulum. Apart from palaeophyle, no paratabulation features. Test wall 1 to 1.5 µm thick and composed of two layers. Periphragm somewhat thin; surface has fairly sparse vermiculate ridges; 3 to 25 µm in length. Many ridges quite high (about 2 µm) and rather unusually shaped, appearing like staples or shallow arches on contour line. If damaged, this type of ridge appears as a process having the shape of a short spine or broken bone. A few ridges will occasionally also extend to apical and antapical horns. Surface of outer wall between ridges is finely granulate or rough. Archaeopyle located below apical section and normally very pronounced and fairly large, having a roundly square or horseshoe shape; precingular; type P (only 3"). Operculum completely separated and normally in original position or fallen away.
Size: Tests have a total length of 72.5 to 102 µm and a width of 67 to 80 µm while the body is 62.5 to 78 µm long and 62.5 to 72.5 µm wide (4 measured). The holotype has a total length of 80 µm and a width of 70 µm while the body is 62.5 µm long and 70 µm wide. The apical horn is about 10 µm long while the antapical horns are about 5 µm in length.
Locality and Horizon: Bashibulake, in Wuqia County, and Aertashi. in Shache County: Wuqia Formation
Now Carpatella. Originally Paraireiana, subsequently (and now) Carpatella.
Holotype: He Chengquan, 1984, pl.1, fig.8
Age: Paleocene-Eocene
Description: Tests ventro-dorsally flattened; body outline subcircular to elliptical. Presence of single conspicuous apical [horn] and antapical horns: bases unjoined to test interior; equal in size or not. Apical horn normally larger, cylindrical to conical in shape; apex somewhat pointed or bluntly rounded; 5 to 13.5 µm long. Antapical horns generally smaller (a large one occasionally appears); cylindrical; 5 to 7.5 µm long. No sign of sulcus or cingulum. Apart from palaeophyle, no paratabulation features. Test wall 1 to 1.5 µm thick and composed of two layers. Periphragm somewhat thin; surface has fairly sparse vermiculate ridges; 3 to 25 µm in length. Many ridges quite high (about 2 µm) and rather unusually shaped, appearing like staples or shallow arches on contour line. If damaged, this type of ridge appears as a process having the shape of a short spine or broken bone. A few ridges will occasionally also extend to apical and antapical horns. Surface of outer wall between ridges is finely granulate or rough. Archaeopyle located below apical section and normally very pronounced and fairly large, having a roundly square or horseshoe shape; precingular; type P (only 3"). Operculum completely separated and normally in original position or fallen away.
Size: Tests have a total length of 72.5 to 102 µm and a width of 67 to 80 µm while the body is 62.5 to 78 µm long and 62.5 to 72.5 µm wide (4 measured). The holotype has a total length of 80 µm and a width of 70 µm while the body is 62.5 µm long and 70 µm wide. The apical horn is about 10 µm long while the antapical horns are about 5 µm in length.
Locality and Horizon: Bashibulake, in Wuqia County, and Aertashi. in Shache County: Wuqia Formation