Genus
Tetragraptus Salter, 1863
Selection of related publications
Maletz, J., Ahlberg, P. 2021. Dapingian to lower Darriwilian (Middle Ordovician) graptolite biostratigraphy and correlation of the Krapperup drill core, Scania, Sweden. GFF 143, 1, 16-39. DOI:10.1080/11035897.2020.1822439
Suyarkova, A. A., Koren', T. N. 2009. Advances in the Ordovician graptolite biostratigraphy of the St Petersburg area, Russia. Estonian Journal of Earth Sciences 58, 1, 3-9. DOI:10.313176/earth.2009.1.01
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
Maletz, J. 2005. Early Middle Ordovician graptolite biostratigraphy of the Lovisefred and Albjära drill cores (Scania, southern Sweden). Palaeontology 48, 4, 763-780. DOI:10.1111/j.1475-4983.2005.00482.x
Tolmacheva, T. J., Koren', T. N., Holmer, L. E., Popov, L. E., Raevskaya, E. 2001. The Hunneberg Stage (Ordovician) in the area east of St. Petersburg, north-western Russia. Paläontologische Zeitschrift 74, 4, 543-561. DOI:10.1007/BF02988161
Mitchell, C. E., Maletz, J. 1995. Proposal for adoption of the base of the Undulograptus austrodentatus Biozone as a global Ordovician stage and series boundary level. Lethaia 28, 4, 317-331. DOI:10.1111/j.1502-3931.1995.tb01822.x
Lindholm, K. 1991. Ordovician graptolites from the Early Hunneberg of southern Scandinavia. Palaeontology 34, 2, 283-327.
Kaljo, D. 1974. On graptolite zones of Tremadoc and Arenig of Pribaltic and Moscow syneclises.Graptolites of the USSR , pp. 31-36. Nauka.
Skevington, D. 1965. Graptolites from the Ontikan Limestones (Ordovician) of Öland, Sweden. II. Graptoloidea and Graptovermida. Bulletin of the Geological Institutions of the University of Uppsala 43, 1-74.
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.
List of species
1. Tetragraptus amii Elles et Wood, 1902 | Ordovician
3. Tetragraptus astericus Monsen, 1937 | Ordovician
5. Tetragraptus cor (Strandmark, 1902) | Darriwilian
6. Tetragraptus crucifer (Hall, 1858) | Lower Ordovician
7. Tetragraptus gracilis Monsen, 1937 | Ordovician
8. Tetragraptus headi (Hall, 1858) | Lower Ordovician
9. Tetragraptus krapperupensis Lindholm, 1991 | Lower Ordovician
10. Tetragraptus longus Lindholm, 1991 | Lower Ordovician
11. Tetragraptus mobergi Monsen, 1937 | Ordovician
12. Tetragraptus norvegicus (Monsen, 1937) | Ordovician
13. Tetragraptus phyllograptoides Strandmark, 1902 | Lower Ordovician
14. Tetragraptus quadribrachiatus (Hall, 1858) | Tremadocian
16. Tetragraptus serra (Brongniart, 1828) | Tremadocian
18. Tetragraptus taraxacum Ruedemann, 1904 | Middle Ordovician
19. Tetragraptus toernquisti Monsen, 1937 | Ordovician
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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 | |
| Genus | Tristichograptus |
References based on distribution
- Ulst et al., 1982 Tremadocian
- Ulst et al., 1982 Tremadocian
- Ulst et al., 1982 Tremadocian
- Ulst et al., 1982 Lower Ordovician
- Ulst et al., 1982 Tremadocian
- Lindholm, 1991a Hunneberg Stage
- Lindholm, 1991a Slemmestad, Norway Hunneberg Stage
- Lindholm, 1991a Krapperup borehole 129.46 - 129.54 Hunneberg Stage
- Lindholm, 1991a Krapperup borehole 140.3 - 140.87 Hunneberg Stage
- Maletz, 2005 Lovisefred borehole Middle Ordovician
- Maletz, 2005 Lovisefred borehole Middle Ordovician
- Maletz, 2005 Lovisefred borehole Middle Ordovician
- Maletz, 2005 Lovisefred borehole Middle Ordovician
- Maletz, 2005 Albjära borehole, Scania Middle Ordovician
- Maletz, 2005 Albjära borehole, Scania Middle Ordovician
- Skevington, 1965a Hälludden Cliff, Öland Middle Ordovician
- Kaljo, 1974 Lyubim 1 borehole, Jaroslavl oblast Lower Ordovician
- Kaljo, 1974 Lyubim 2 borehole, Jaroslavl oblast Lower Ordovician
- Kaljo, 1974 Adze 6 borehole Lower Ordovician
- Tolmacheva et al., 2001b Lava River, Leningrad Oblast Hunneberg Stage
- Tolmacheva et al., 2001b Putilovo quarry, Leningrad Oblast Lower Ordovician
- Mitchell & Maletz, 1995 Lovisefred borehole Lower Ordovician
- Suyarkova & Koren', 2009 Babino quarry Leningrad district Ordovician
- Suyarkova & Koren', 2009 Putilovo quarry, Leningrad Oblast Ordovician
- Suyarkova & Koren', 2009 Babino quarry Leningrad district Ordovician
- Suyarkova & Koren', 2009 Putilovo quarry, Leningrad Oblast Ordovician
- Egenhoff & Maletz, 2007 Diabasbrottet quarry, Sweden Lower Ordovician
- Egenhoff & Maletz, 2007 Diabasbrottet quarry, Sweden Lower Ordovician
- Egenhoff & Maletz, 2007 Diabasbrottet quarry, Sweden Lower Ordovician
- Egenhoff & Maletz, 2007 Hunneberg, Sweden Lower Ordovician
- Obut, 1960 Lower Ordovician
- Obut, 1960 Lower Ordovician
- Maletz & Ahlberg, 2021 Krapperup borehole Dapingian
- Maletz & Ahlberg, 2021 Krapperup borehole Darriwilian