1960Thallograptus densitubularis sp. nov. — Obut, pp. 146-147, fig. 1:1-1a
Selection of related publications
Obut, A. M. 1960.
Correlation of some parts of Estonian Ordovician and Silurian deposits according to graptolites.ENSV TA Geoloogia Instituudi uurimusedV,
143-157.