liik
Coronograptus gregarius (Lapworth, 1876)
Sünonüümika
1876     Monograptus gregarius  sp. nov. — Lapworth , lk. 317, joon. 10:12a-c
1911     Monograptus gregarius Lapworth — Elles & Wood , lk. 365, joon. 36:3a-d, text fig. 238 a,b
1940     Monograptus gregarius Lapworth — Desio , lk. 31-32, joon. 2:17
1963     Monograptus gregarius Lapworth — Willefert , lk. 30, joon. 1:18, ?14
1968     Coronograptus gregarius gregarius — Obut & Sobolevskaya , lk. 92, joon. XX 1-6; XXI 1
1970     Monograptus gregarius — Lapworth , lk. 317, joon. 10:12a-c
1985     Coronograptus gregarius (Lapworth, 1876) — Obut & Sennikov , lk. 56
1988     Coronograptus gregarius gregarius (Lapworth, 1876) — Štorch , lk. 18-19, joon. 4:1-3
1988     Coronograptus gregarius gregarius (Lapworth, 1876) — Obut et al. , lk. 69
1998     Coronograptus gregarius (Lapworth, 1876) — Štorch , lk. 228, joon. 7:5,6; text fig. 7 A-C
Valik taksonit käsitlevast teaduskirjandusest
Männik, P., Tinn, O., Loydell, D. K., Ainsaar, L. 2016. Age of the Kalana Lagerstätte, early Silurian, Estonia.  Estonian Journal of Earth Sciences   65,   2,   105-114. DOI:10.3176/earth.2016.10
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. 
Loydell, D. K., Kaljo, D., Männik, P. 1998. Integrated biostratigraphy of the lower Silurian of the Ohesaare core, Saaremaa, Estonia.  Geological Magazine   135,   6,   769-783. DOI:10.1017/S0016756898001423
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
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Klassifikatsioon
| organismirühm | Biota | 
| riik | Animalia | 
| hõimkond | Hemichordata | 
| klass | Pterobranchia | 
| alamklass | Graptolithina | 
| selts | Graptoloidea | 
| alamselts | Axonophora | 
| sugukond | Monograptidae | 
| perekond | Coronograptus | 
| liik | cyphus | 
| gregarius | 
Levik kirjandusandmetel
- Loydell et al., 2010 Kolka 54 puurauk 619.4 - Raikküla lade
 - Loydell et al., 2003 Aizpute 41 puurauk 972.82 - Aeroni lade
 - Loydell et al., 1998a Ohesaare puurauk 381.23 - Raikküla lade
 - Põldvere, Anne, 2003 (ed) Ruhnu 500 puurauk 558.5 - Raikküla lade
 - Ulst et al., 1984 Llandovery
 - Ulst et al., 1984 Paroveja 9 puurauk Llandovery
 - Kaljo & Vingisaar, 1969 Ikla puurauk Raikküla lade