There are twenty + plates to a row.
A typical movable plate measures 17 mm. long by 6 mm. wide.
There were at least four rows in the pelvic buckler, probably eight as in the Santa Cruz.
A typical fixed plate measures 10 mm. long by 5 mm. wide.
Prozaedius tenuissimus Ameghino
P. tenuissimus Amegh., 1902, Bol. Acad. Nac. Cienc. Cordoba, t. 17, p. 66.
This species is characterized by Ameghino on account of its small size. The movable plates have two furrows which converge toward the front, and between which is a median crest. In the furrows are two rows of perforations. A movable plate measures 9 mm. long by 4 mm. wide.
Stenotatus Ameghino
- Euphractus Ameghino, in part, 1887, Bol. Mus. La Plata, t. I, p. 26 of separate.
- Dasypus Amegh., in part, 1889, Act. Acad. Nac. Cienc. Cordoba, t. 5, p. 864.
- Stenotatus Amegh., 1891, Revista Argen. Hist. Nat., t. I, p. 253.
- Dasypus Lydekker, 1894, Anal. Mus. La Plata, t. 3, p. 55.
- Prodasypus Amegh., 1894, Bol. Acad. Nac. Cienc. Cordoba, t. 13, p. 172 of separate.
- Stenotatus Scott, 1903-5 Princeton Patagonian Exped., vol. 5, p. 80.
The genus is very like Prozaedius but differs in having thicker and wider movable plates, in having more rows of plates in the pelvic buckler (11), and in details throughout the skeleton. We found no representatives of the genus, but Ameghino has described a species (no figure), S. (Prodasypus) ornatus[22] based on isolated plates. A movable plate measures 18 mm. long by 6-7 mm. wide, while a fixed plate measures 9 mm. long, by 6-7 mm. wide.