perekond
Paratetragraptus Obut, 1957
Valik taksonit käsitlevast teaduskirjandusest
Egenhoff, S., Maletz, J. 2007. Graptolites as indicators of maximum flooding surfaces in monotonous deep-water self successions. Palaios 22, 4, 373-383. DOI:10.2110/palo.2005.p05-096r
Kaljo, D. 1974. On graptolite zones of Tremadoc and Arenig of Pribaltic and Moscow syneclises. Graptolites of the USSR, pp. 31-36. Nauka.
Leitud liigid
1. Paratetragraptus approximatus (Nicholson, 1873) | Flo lade
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Klassifikatsioon
| organismirühm | Biota |
| riik | Animalia |
| hõimkond | Hemichordata |
| klass | Pterobranchia |
| alamklass | Graptolithina |
| selts | Graptoloidea |
| alamselts | Dichograptina |
| sugukond | Phyllograptidae |
| perekond | Paratetragraptus |
| liik | approximatus |
| perekond | Pendeograptus |
| Phyllograptus | |
| Pseudophyllograptus | |
| Pseudotrigonograptus | |
| Tshallograptus |