Subspecies
Orthograptus calcaratus incisus (Lapworth, 1908)
Selection of related publications
Goldman, D., Nõlvak, J., Maletz, J. 2015. Middle to Late Ordovician graptolite and chitinozoan biostratigraphy of the Kandava-25 drill core in western Latvia. GFF 137, 3, 197-211. DOI:10.1080/11035897.2015.1021375
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Axonophora |
| Infraorder | Diplograptina |
| Subfamily | Peiragraptinae |
| Genus | Orthograptus |
| Species | calcaratus |
| Subspecies | incisus |
References based on distribution
- Goldman et al., 2015a Kandava 25 borehole Kukruse Stage