liik
Orthograptus calcaratus (Lapworth, 1876)
Sünonüümika
1907 Diplograptus (Orthograptus) calcaratus — Elles & Wood , lk. 239-241, joon. 30:1a-c
1975 Rectograptus calcaratus (Lapworth) — Ulst , lk. 78-79, joon. 2:10; 1:9
Valik taksonit käsitlevast teaduskirjandusest
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
Ulst, R. 1975. Graptolites from Upper Ordovician Fjäcka Member of Middle Baltic. The Fauna and Stratigraphy of Paleozoic and Mesozoic of Baltic and Byelorussia, pp. 69-84. Mintis.
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Klassifikatsioon
| organismirühm | Biota |
| riik | Animalia |
| hõimkond | Hemichordata |
| klass | Pterobranchia |
| alamklass | Graptolithina |
| selts | Graptoloidea |
| alamselts | Axonophora |
| infraselts | Diplograptina |
| alamsugukond | Peiragraptinae |
| perekond | Orthograptus |
| liik | acutus |
| aequalis | |
| calcaratus | |
| alamliik | incisus |
| liik | inopinatus |
| mutabilis | |
| parovejensis | |
| pauperatus | |
| propinquus | |
| proprius | |
| quadrimucronatus | |
| stonishkensis | |
| whitfieldi |
Levik kirjandusandmetel
- Ulst, 1975 Blidene 5 puurauk Fjäcka kihistu