Selection of related publications
Maletz, J., Ahlberg, P., Lundberg, F. 2020. Ordovician graptolite biostratigraphy of the Röstånga-2 drill core (Scania, southern Sweden). GFF 142, 3, 206-222. DOI:10.1080/11035897.2020.1739743
Loydell, D. K., Männik, P., Nestor, V. 2003. Integrated biostratigraphy of the lower Silurian of the Aizpute-41 core, Latvia. Geological Magazine 140, 2, 205-229. DOI:10.1017/S0016756802007264
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
Maletz, J. 1997. Graptolites from the Nicholsonograptus fasciculatus and Pterograptus elegans Zones (Abereiddian, Ordovician) of the Oslo Region, Norway. Greifswalder Geowissenschaftliche Beiträge 4, 5-98.
Maletz, J. 1996. The identity of Didymograptus (Expansograptus) suecicus (Tullberg) and related species (Graptoloidea, Dichograptidae). Paläontologische Zeitschrift 70, 1/2, 203-212. DOI:10.1007/BF02988278
Maletz, J. 1995. The Middle Ordovician (Llanvirn) graptolite succession of the Albjära core (Scania, Sweden) and its implication for a revised biozonation. Zeitschrift für Geologische Wissenschaften 23, 3, 249-259.
Kaljo, D. 1974. On graptolite zones of Tremadoc and Arenig of Pribaltic and Moscow syneclises.Graptolites of the USSR , pp. 31-36. Nauka.
Bergström, S. M. 1973. Correlation of the late Lasnamägian Stage (Middle Ordovician) with the graptolite succession. GFF 95, 1, 9-18. DOI:10.1080/11035897309455420
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I. pp. 1-346. Valgus.
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.
Jaanusson, V. 1960. Graptoloids from the Ontikan and Viruan (Ordov.) limestones of Estonia and Sweden. Bulletin of the Geological Institutions of the University of Uppsala 38, 289-366.
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. Didymograptus acutus Ekström, 1937 | Aseri Stage
2. Didymograptus artus Elles et Wood, 1902 | Darriwilian
3. Didymograptus bifidus (Hall, 1865) | Ordovician
6. Didymograptus decens Törnquist, 1889 | Lower Ordovician
7. Didymograptus ensjoensis Monsen, 1937 | Ordovician
8. Didymograptus extensus (Hall, 1858) | Ordovician
9. Didymograptus flexilis Monsen, 1937 | Ordovician
11. Didymograptus goldschmidti Monsen, 1937 | Ordovician
13. Didymograptus grandis Monsen, 1937 | Ordovician
14. Didymograptus holtedahli Monsen, 1937 | Ordovician
15. Didymograptus kreklingensis Monsen, 1937 | Ordovician
16. Didymograptus leptograptoides Monsen, 1937 | Lower Ordovician
17. Didymograptus minutus Törnquist, 1879 | Lower Ordovician
18. Didymograptus murchisoni (Beck, 1839) | Darriwilian
19. Didymograptus opimus Monsen, 1937 | Ordovician
20. Didymograptus oscillatoris Monsen, 1937 | Ordovician
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Classification
References based on distribution
- Loydell et al., 2003 Aizpute 41 borehole 961.06 - Aeronian
- Obut, 1960 Väike-Pakri Island Kunda Stage
- Rõõmusoks, 1970a Aseri Stage
- Jaanusson, 1960a Fågelsång outcrop, Sweden
- Jaanusson, 1960a Oslo depression
- Middle Ordovician
- Bergström, 1973 Killeröd quarry, Scania, Sweden Lasnamägi Stage
- Kaljo, 1974 Adze 6 borehole Lower Ordovician
- Kaljo, 1974 Adze 6 borehole Lower Ordovician
- Kaljo, 1974 Adze 6 borehole Lower Ordovician
- Tolmacheva et al., 2001b Lava River, Leningrad Oblast Hunneberg Stage
- Jaanusson, 1960a Väike-Pakri Island Kunda Stage
- Jaanusson, 1960a Väike-Pakri Island Kunda Stage
- Maletz, 1995b Albjära borehole, Scania
- Maletz, 1995b Albjära borehole, Scania 101.55 - 101.55
- Maletz, 1997c Slemmestad, Norway Viru Series
- Maletz, 1997c Slemmestad, Norway Viru Series
- Maletz et al., 2020 Röstånga-2 borehole Darriwilian