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.

Ulst, R., Gailite, L., Yakovleva, V. 1982. Ordovik Latvii. pp. 1-294. Zinatne.

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

2. Tetragraptus askerensis Monsen, 1937

3. Tetragraptus astericus Monsen, 1937 | Ordovician

4. Tetragraptus bigsbyi (Hall, 1865) | Tremadocian→Middle 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

15. Tetragraptus reclinatus Elles et Wood, 1902 | Floian→Darriwilian

16. Tetragraptus serra (Brongniart, 1828) | Tremadocian

17. Tetragraptus spinosus (Spjeldnaes, 1953)

18. Tetragraptus taraxacum Ruedemann, 1904 | Middle Ordovician

19. Tetragraptus toernquisti Monsen, 1937 | Ordovician

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

Skevington, 1965a Hälludden Cliff, Öland Middle Ordovician