Graptolithina
Species

Orthograptus propinquus (Hadding, 1913)

Synonymy list
1913     Diplograptus propinquus n. sp. — Hadding , pp. 47 , fig. Taf. 3:11, 12
Selection of related publications
Tzaj, D. T. 1976. Graptolity srednego ordovika Kazahstana. pp. 1-76. Nauka.
References based on distribution