Sinsk Formation
Geologic formation in Russia
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The Sinsk Formation is a geologic formation in Central Siberia, Russia, exposed along the Lena River. It preserves fossils dating back to the Botomian stage of the Cambrian (corresponding to Cambrian Series 2). It notably contained the Sinsk Algal Lens, a Lagerstätte which preserved some soft-bodied animals that would not typically be preserved as fossils.[1] However, the Sinsk Algal Lens has largely been destroyed by commercial fossil collectors.[2]
| Sinsk Formation | |
|---|---|
| Stratigraphic range: Botomian | |
| Type | Formation |
| Underlies | Kutorgina Formation |
| Overlies | Perekhod Formation |
| Thickness | ~60 m |
| Location | |
| Region | Siberian Platform |
| Country | Russia |
Paleobiota
After Ivantsov et al., 2005 and others[1][3]
Paleobiota
| Paleobiota | ||||
|---|---|---|---|---|
| Genus | Species | Notes | ||
| Siberion | S. lenaicus | Namesake genus of Siberiida. | ||
| Phytophilaspis | P. pergamena | Xandarellid artiopod | ||
| Jakutus | J. primigenius | Corynexochid trilobite | ||
| Eldonia | E. ?ludwigi | Cambroernid, global distribution | ||
| Lenica | L. unica, L. rigbyi | Hexactinellid sponge | ||
| Archiasterella | A. sp | Chancellorid | ||
| Wapkia | W. petila | Protomonaxonid sponge | ||
| Cambrorhytium | C. minor | Indeterminate cnidarian? | ||
| Corallioscolex | C. labyrinthus | Palaeoscolecid worm | ||
| Palaeoscolex | P. spinosus, P. lubovae | Palaeoscolecid worm[4] | ||
| Sahascolex | S. labyrinthus | Palaeoscolecid worm[4] | ||
| Microdictyon | M. ?ovalum | Eoconchariid lobopodian | ||
| Delgadella | D. lenaica | Agnostid | ||
| Edelsteinaspis | E. ornata, E. granulata | Corynexochid trilobite | ||
| Bergeroniaspis | B. lenaica, B. divergens | Redlichiid trilobite | ||
| Bergeroniellus | B. spinosus | Redlichiid trilobite | ||
| Binodaspis | B. secunda | Ptychopariid trilobite | ||
| Sinskolutella | S. ordinata | Bradoriid | ||
| Yakutingella | Y. intricata | Bradoriid | ||
| Eoobolus | E. sp | Lingulate brachiopod | ||
| Linnarssonia | L. sp | Lingulate brachiopod | ||
| Botsfordia | L. sp | Lingulate brachiopod | ||
| Nisusia | N. sp? | Rhynchonellate brachiopod | ||
| Wiwaxia | W. sp | Wiwaxiid mollusc | ||
| Tanchaiella | T. sp | Hexactinellid sponge | ||
| Ivantsovia | I. andreyi | Protomonaxonid sponge | ||
| Dodecaactinella | D. sp | Calcarean sponge | ||
| Nabaviella | N. sp | Indeterminate sponge | ||
| Cjulanciella | C. asimmetrica | Indeterminate sponge | ||
| Neomenispongia | N. diazoma, N. plexa | Early demosponge[5] | ||
| Keithospongos | K. loricatus | Stem-demosponge?[5] | ||
| Wronascolex | W. lubovae, W. spinosus | Palaeoscolecid worm | ||
| Piloscolex | P. platum | Palaeoscolecid worm | ||
| Vladipriapulus | V. malakhovi | Priapulid worm | ||
| Judomia | J. rossea | Redlichiid trilobite | ||
| Bathyuriscellus | B. sinensis | Corynexochid trilobite | ||
| Aldonaia | A. ornata | Ptychopariid trilobite | ||
| Duibianella | D. sp | Bradoriid | ||
| Tubuterium | T. ivantsovi | Bradoriid | ||
| Tuzoia | T. sp | Tuzoiid hymenocarine | ||
