Species

Demirastrites triangulatus (Harkness, 1851)

Synonymy list

1851 Rastrites triangulatus — Harkness , pp. 38, fig. 1:3a-d

1852 Monograptus triangulatus — Geinitz , pp. 47, fig. 5:4-8

1876 Monograptus triangulatus — Lapworth , pp. 359, fig. 13:5a-b

1899 Monograptus triangulatus — Törnquist , pp. 19, fig. 3:25-28; 4:1-2

1912 Demirastrites triangulatus — Eisel , pp. 38, fig. 3:6-15

1913 Monograptus triangulatus (Harkness) — Elles & Wood , pp. 471-472, fig. 47:4a-f

1919 Demirastrites triangulatus — Kirste , pp. 153, fig. 3:51

1920 Monograptus raitzhainiensis (Eisel) — Gortani , fig. 3:25-27

1920 Monograptus triangulatus var. cirratus — Gortani , fig. 3:22-24

1939 Monograptus triangulatus — Hundt , pp. 79, fig. 10, 10,180

Selection of related publications

Radzevičius, S. 2013. Silurian graptolite biozones of Lithuania: present and perspectives. Geologija 55, 2(82), 41-49. DOI:10.6001/geologija.v55i2.2757

Loydell, D. K., Nestor, V., Männik, P. 2010. Integrated biostratigraphy of the lower Silurian of the Kolka-54 core, Latvia. Geological Magazine 147, 2, 253-280. DOI:10.1017/S0016756809990574

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

Põldvere, Anne (ed) 2003. Ruhnu (500) drill core. Estonian Geological Sections Bulletin 5, 1-76. Geological Survey of Estonia.

Ulst, R. Ž., Gailite, L. K., Springis, T. K. 1984. Lithostratigraphic subdivision of the subsurface Ordovician rocks of the Jelgeva Depression. Stratigrafiâ drevnepaleozojskih otloženij Pribaltiki, pp. 63-76. Eesti NSV Teaduste Akadeemia.

Kaljo, D., Vingisaar, P. 1969. On the sequence of the Raikküla stage in southernmost Estonia. Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология 18, 3, 270-277. DOI:10.3176/chem.geol.1969.3.10

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Hemichordata
Class	Pterobranchia
Subclass	Graptolithina
Order	Graptoloidea
Suborder	Axonophora
Family	Monograptidae
Genus	Demirastrites
Species	pectinatus
	phleoides
	raitzhainiensis
	simulans
	triangulatus

References based on distribution

Loydell et al., 2010 Kolka 54 borehole 621.5 - Raikküla Stage
Loydell et al., 2003 Aizpute 41 borehole 974.35 - Aeronian
Põldvere, Anne, 2003 (ed) Ruhnu 500 borehole 557.8 - Raikküla Stage
Ulst et al., 1984 Llandovery
Radzevičius, 2013 Aeronian
Kaljo & Vingisaar, 1969 Ikla borehole Raikküla Stage