ülemselts
Flexibilia Zittel, 1895
Valik taksonit käsitlevast teaduskirjandusest
Wright, D. F., Toom, U. 2017. New crinoids from the Baltic region (Estonia): fossil tip-dating phylogenetics constrains the origin and Ordovician-Silurian diversification of the Flexibilia (Echinodermata).  Palaeontology   60,   6,   893-910. DOI:10.1111/pala.12324
Ausich, W. I., Wilson, M. A. 2016. Llandovery (early Silurian) crinoids from Hiiumaa Island, western Estonia.  Journal of Paleontology   90,   6,   1138-1147. DOI:10.1017/jpa.2016.120
Ausich, W. I., Wilson, M. A., Vinn, O. 2015. Wenlock and Pridoli (Silurian) crinoids from Saaremaa, western Estonia (Phylum Echinodermata).  Journal of Paleontology   89,   1,   72-81. DOI:10.1017/jpa.2014.6
Ausich, W. I., Wilson, M. A., Vinn, O. 2012. Crinoids from the Silurian of Western Estonia.  Acta Palaeontologica Polonica   57,   3,   613-631. DOI:10.4202/app.2010.0094
Franzén, C. 1983. Ecology and taxonomy of Silurian crinoids from Gotland.  Acta Universitatis Upsaliensis   665,      1-31.
Franzén, C. 1982. A Silurian crinoid thanatotope from Gotland.  GFF   103,   4,   469-490. DOI:10.1080/11035898209453725
Bekker, H. 1924. Devon Irboska ümbruses: stratigraafia, fauna ja paleogeograafia.  Eesti Loodusteaduse Arhiiv   X,   1,   1-55.  K. Mattiesen. 
Angelin, N. P. 1878. Iconographica Crinoideorum in stratis Sueciae siluricis fossilium. 2. Cystidea. pp. 1-62.  Samson & Wallin. 
Pacht, R. 1852. Dimerocrinites Oligoptilus : ein Beitrag zur Kenntniss der Gattung Dimerocrinites : (mit drei lithographirten Tafeln). pp. 1-30.  Buchdruckerei der Kaiserlichen Akademie der Wissenschaften. 
Leitud liigid
1. Anisocrinus interradiatus Angelin, 1878 | Ülem-Silur
2. Calpiocrinus ovatus Angelin, 1878 | Wenlock
3. Calpiocrinus rotundatus Springer, 1906 | Wenlock
4. Clidochirus pyrum Angelin, 1878 | Wenlock
5. Haereticotaxocrinus asper Franzén, 1982 | Ludlow
6. Haereticotaxocrinus oblongatus (Angelin, 1878) | Wenlock
10. Icthyocrinus pyriformis (Phillips, 1839) | Wenlock
11. Meristocrinus interbrachiatus (Angelin, 1878) | Ülem-Silur
12. Paerticrinus arvosus Wright et Toom, 2017 | Juuru lade
14. Protaxocrinus interbrachiatus (Angelin, 1878) | Wenlock
16. Protaxocrinus salteri (Angelin, 1878) | Wenlock
17. Tintinnabulicrinus estoniensis Wright et Toom, 2017 | Keila lade
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Klassifikatsioon
| organismirühm | Biota | 
| riik | Animalia | 
| hõimkond | Echinodermata | 
| alamhõimkond | Pelmatozoa | 
| klass | Crinoidea | 
| ülemklass | Pentacrinoidea | 
| infraklass | Inadunata | 
| parvklass | Cladida | 
| ülemselts | Flexibilia | 
| selts | Sagenocrinida | 
| Taxocrinida | |
| ülemselts | Porocrinoidea | 
| magnorder | Eucladida | 
| selts | Cyathocrinidida | 
| sugukond | Botryocrinidae | 
| Metabolocrinidae | 
 See also