Species: janvieri GAGNIER, BLIECK & RODRIGO, 1986
Etymology: In honor of Dr. Philippe Janvier.

Holotype: Museo Nacional de Historia Natural, La Paz, MNHN-BOL V-3282

Locality: Sacabamba, Esteban Arze Province, Cochabamba Department, Bolivia.

Horizon: Anzaldo Formation.

Biostratigraphy:

Age: Llanvirn Epoch, Lower Dyfed Subperiod-Caradoc Epoch, Lower Bala Subperiod, Late Early-Early Late Ordivician.

Material: Anterior part of a dorsal sheild.

Referred material:

MNHN-BOL. V. 3283: 2 bone fragments of the headshield.

PARDEL, SANSOM, GAGNIER, CESPEDES & JANVIER, 2006

MHNC 1182: Tail.

GAGNIER, 1989

MNHN 1009

Locality: Cerro Chakeri, near the village of Sacabambilla and -50 km east of Cochamba, Cochabamba Department, Bolivia.

Horizon: Anzaldo Formation.

Biostratigraphy:

Age: Llanvirn Epoch, Lower Dyfed Subperiod-Caradoc Epoch, Lower Bala Subperiod, Late Early-Early Late Ordivician.

Material: A nearly complete specimen.

Note: almst 30 articulated speciemens are known.