Graptolithina

Thallograptus Öpik, 1928

Current taxon is already existed. See initial taxon Hormograptus
Taxon ID: 9777 | 2013-08-13 / 2020-10-14
Fossil group: Graptolithina
Belongs to:
1 Other version of taxon: Hormograptus
Stratigraphic range: Ordoviitsium Silur (within ca. 485.4–416.0 million years)
Baltoscandian species (in database):
References based on distribution