Species: rzasnickii MENNER, 1948 (nomen dubium)
Etymology:

Holotype: MGRI VI 61/1

Locality: Right bank of the Vilyui River, at the mouth of the Iligira (Ulgir) River, 20 km upstream of the village of Suntar, , Siberia, Asian Russia.

Horizon:

Biostratigraphy:

Age: Lower substage, Toarcian Stage, Lias Epoch, Early Jurassic.

Material: Cervical centrum.

Referred material:

Locality: Mouth of the Couture-Yuryah River, Markha Gorge, Siberia, Asian Russia.

Horizon: Outcrop 9.

Biostratigraphy:

Age: Lower substage, Toarcian Stage, Lias Epoch, Early Jurassic.

Material:

Number: Not given: Isolated fragments.

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Species: ?jakowlewi MENNER, 1948 (nomen dubium)
Etymology:

Holotype: MGRI VI61/15

Locality: Right bank of the Vilyui River, at the mouth of the Iligira (Ulgir) River, 20 km upstream of the village of Suntar, , Siberia, Asian Russia.

Horizon:

Biostratigraphy:

Age: Lower substage, Toarcian Stage, Lias Epoch, Early Jurassic.

Material: Caudal centrum.