Species
Tetragraptus crucifer (Hall, 1858)
Synonymy list
1858 Graptolithus crucifer — Hall , pp. 125
1865 Graptolithus crucifer — Hall , pp. 92, fig. 5:10, 13
1868 Graptolithus (Monoprion) crucifer — Hall , pp. 144
1868 Tetragraptus crucifer — Nicholson , pp. 144
1898 Tetragraptus crucifer — Elles , pp. 488, fig. 12
1902 Tetragraptus crucifer — Elles et Wood , pp. 58, fig. 5:2
1947 Tetragraptus crucifer (Hall) — Ruedemann , pp. 302-303, fig. 50:30
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 Uurimused V, 143-157.
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Dichograptina |
| Family | Tetragraptidae |
| Genus | Tetragraptus |
| Species | amii |
| askerensis | |
| astericus | |
| bigsbyi | |
| cor | |
| crucifer | |
| gracilis | |
| headi | |
| krapperupensis | |
| longus | |
| mobergi | |
| norvegicus | |
| phyllograptoides | |
| pseudobigsbyi | |
| quadribrachiatus | |
| reclinatus | |
| serra | |
| spinosus | |
| taraxacum | |
| toernquisti |
References based on distribution
- Obut, 1960 Lower Ordovician