Lower Cambrian helcionelloid molluscs from Estonia

References

• Babcock , L. E. and Robison , R. A. 1988 . Taxonomy and paleobiology of some Middle Cambrian Scenella (Cnidaria) and hyolithids (Mollusca) from western North America . University of Kansas Paleontological Contributions , 121 : 1 – 22 .
   Google Scholar
• Babcock , L. E. , Shanchi , Peng , Geyer , G. and Shergold , J. H. 2005 . Changing perspectives on Cambrian chronostratigraphy and progress toward subdivision of the Cambrian System . Geosciences Journal , 9 : 101 – 106 .
   Web of Science ®Google Scholar
• Bengtson , S. and Fletcher , T. P. 1983 . The oldest sequence of skeletal fossils in the Lower Cambrian of southeastern Newfoundland . Canadian Journal of Earth Sciences , 20 : 525 – 536 .
   Web of Science ®Google Scholar
• Bengtson , S. , Conway Morris , S. , Cooper , B. J. , Jell , P. A. and Runnegar , B. N. 1990 . Early Cambrian fossils from South Australia . Association of Australasian Palaeontologists, Memoir , 9 : 364
   Google Scholar
• Billings , E. 1872 . On some fossils from the Primordial rocks of Newfoundland . The Canadian Naturalist , 6 : 465 – 479 .
   Google Scholar
• Cobbold , E. S. 1921 . The Cambrian horizons of Comley (Shropshire) and their Brachiopoda, Pteropoda, Gasteropoda and etc . The Quarterly Journal of the Geological Society of London , 76 : 325 – 386 .
   Google Scholar
• Cuvier , G. 1797 . Tableau élémentarie de l'histoire naturelle des animaux Baudouin, Paris, 710
   Google Scholar
• F⊘yn , N. S. and Glaessner , M. F. 1979 . Platysolenites, other animal fossils, and the Precambrian-Cambrian transition in Norway . Norsk Geologisk Tidsskrift , 59 : 25 – 46 .
   Google Scholar
• F⊘yn , S. 1983 . Underkambriske dyrefossiler fra Troms og Finnmark . Ottar , 83 ( 5 ) : 37 – 42 .
   Google Scholar
• Geyer , G. 1986 . Mittelkambrische Mollusken aus Marokko und Spanien . Senckenbergiana lethaea , 67 : 55 – 118 .
   Google Scholar
• Geyer , G. 1994 . Middle Cambrian molluscs from Idaho and early conchiferan evolution . New York State Museum Bulletin , 481 : 69 – 86 .
   Google Scholar
• Gravestock , D. I. , Alexander , E. M. , Demidenko , Y. E. , Esakova , N. V. , Holmer , L. E. , Jago , J. B. , Lin , Tian-rui , Melnikova , L. M. , Parkhaev , P. Y. , Rozanov , A. Y. , Ushatinskaya , G. T. , Zang , Wen-long , Zhegallo , E. A. and Zhuravlev , A. Y. 2001 . The Cambrian biostratigraphy of the Stansbury Basin, South Australia . Transactions of the Palaeontological Institute, Russian Academy of Sciences , 282 : 344
   Google Scholar
• Gubanov , A. P. and Peel , J. S. 1998 . Redescription of the type species of Latouchella Cobbold, 1921 (Mollusca) from the Lower Cambrian of Comley (England) . GFF , 120 : 17 – 20 .
   Web of Science ®Google Scholar
• Gubanov , A. P. and Peel , J. S. 1999 . Oelandiella, the earliest Cambrian helcionelloid mollusc from Siberia . Palaeontology , 42 : 211 – 222 .
   Web of Science ®Google Scholar
• Gubanov , A. P. and Peel , J. S. 2000 . Cambrian monoplacophoran molluscs (Class Helcionelloida) . American Malacological Bulletin , 15 : 139 – 145 .
   Web of Science ®Google Scholar
• Gubanov , A. P. and Peel , J. S. 2003 . The Early Cambrian helcionelloid mollusc Anabarella Vostokova . Palaeontology , 46 : 1073 – 1087 .
   Web of Science ®Google Scholar
• Gubanov , A. P. , Skovsted , C. B. and Peel , J. S. 2004 . Anabarella australis (Mollusca, Helcionelloida) from the Lower Cambrian of Greenland . Géobios , 37 : 719 – 724 .
   Web of Science ®Google Scholar
• Harper , J. A. and Rollins , H. B. 1982 . Recognition of Monoplacophora and Gastropoda in the fossil record: a functional morphological look at the bellerophont controversy . Proceedings of Third North American Paleontological Convention , 1 : 227 – 232 .
   Google Scholar
• Harper , J. A. and Rollins , H. B. 2000 . The bellerophont controversy revisited . American Malacological Bulletin , 15 : 147 – 156 .
   Web of Science ®Google Scholar
• Horný , R. J. 1995 . Muscle attachment areas in the Silurian bellerophontacean gastropods Bellerophon scaber (PERNER) and Bubovicus tardus (BARRANDE in PERNER) . Acta Musei Nationalis Pragae, series B, Historia Naturalis , 50 ( 1994 ) : 13 – 24 .
   Google Scholar
• Horný , R. J. 1997a . Grandostoma: an additional bellerophontiform mollusc with circumbilical retractor muscle attachment area . Journal of the Czech Geological Society , 41 : 221 – 231 .
   Google Scholar
• Horný , R. J. 1997b . Bucanopsina gen. n., a new bellerophontoidean gastropod with circumbilical muscle attachment areas from the Middle Ordovician of Bohemia . Veštník Českého geologického ústavu , 72 : 5 – 13 .
   Google Scholar
• Horný , R. J. 1997c . Circumbilical retractor muscle attachment area in the Ordovician trilobed bellerophontoidean gastropod Tritonophon peeli sp. n . Veštník Českého geologického ústavu , 73 : 333 – 338 .
   Google Scholar
• Horný , R. J. 1999 . Circumbilical retractor muscle attachment areas found in Tropidodiscus (Gastropoda, Bellerophontoidea) . Journal of the Czech Geological Society , 44 : 126 – 130 .
   Google Scholar
• Kala , E. , Kajak , K. , Mens , K. and Pirrus , E. 1981 . Litostratigrafia i facii lontovaskogo gorizonta v Estonii. [Lithostratigraphy and facies of the Lontova Stage in Estonia] . Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia , 30 : 137 – 147 . (In Russian).
   Google Scholar
• Knight , J. B. 1947 . Bellerophont muscle scars . Journal of Paleontology , 21 : 264 – 267 .
   Google Scholar
• Knight , J. B. , Cox , L. R. , Keen , A. M. , Batten , R. L. , Yochelson , E. L. and Robertson , R. 1960 . “ Systematic descriptions [Archaeogastropoda] ” . In Treatise on Invertebrate Paleontology. Part I, Mollusca 1, I169-I310 , Edited by: Moore , R. C. Boulder Colorado and Lawrence, Kansas : Geological Society of America and University of Kansas Press .
   Google Scholar
• Koken , E. and Perner , J. 1925 . Die Gastropoden des baltischen Untersilurs . Mémoire de l'Academie de Science de Russie, Leningrad , 37 : 1 – 326 .
   Google Scholar
• Kouchinksy , A. V. 2000 . Shell microstructures in Early Cambrian molluscs . Acta Palaeontologica Polonica , 45 : 119 – 150 .
   Google Scholar
• Landing , E. 1988 . Lower Cambrian of Eastern Massachusetts: stratigraphy and small shelly fossils . Journal of Paleontology , 62 : 661 – 695 .
   Web of Science ®Google Scholar
• Lindström , G. 1880 . Fragmenta Silurica e dono Carolo Henrici Wegelin. Opus studio N.P. Angelin inchoatum 60 Stockholm.
   Google Scholar
• Lendzion , K. 1977 . First gastropod fauna from the Klimontovian Stage (Lower Cambrian) of the South-Eastern Poland . Kwartalnik Geologiczny , 21 : 239 – 243 .
   Google Scholar
• Matthew , G. F. 1895 . Notice of a new genus pteropods from the Saint John Group (Cambrian) . American Journal of Sciences and Arts, series , 3 ( 25 ) : 105 – 111 .
   Google Scholar
• Mens , K. and Isakar , M. 1999 . Facies distribution of Early Cambrian Molluscs in Estonia . Proceedings of the Estonian Academy of Sciences. Geology , 48 : 110 – 115 .
   Google Scholar
• Mens , K. and Pirrus , E. 1977 . “ Stratotipitcheskie razrezy kembria Estonii ” . In Stratotypes of the Cambrian Formations of Estonia , 68 Tallinn : Valgus Press . []. pp. (In Russian)
   Google Scholar
• Mens , K. and Pirrus , E. 1997a . “ Vendian-Tremadock clastogenic sedimentation basins ” . In Geology and Mineral Resources of Estonia , Edited by: Raukas , A. and Teedumäe , A. 184 – 191 . Tallinn : Estonian Academy Publishers .
   Google Scholar
• Mens , K. and Pirrus , E. 1997b . “ Cambrian ” . In Geology and Mineral Resources of Estonia , Edited by: Raukas , A. and Teedumäe , A. 39 – 51 . Tallinn : Estonian Academy Publishers .
   Google Scholar
• Missarzhevsvky , V. V. 1989 . Drevneyshie skeletnye okamenelosti i stratigrafiya pogranichnykh tolsch kembriya i kembriya. [The oldest skeletal fossils and stratigraphy of the Precambrian and Cambrian boundary strata] 237 Trudy Geologicheskogo Instituta Akademii Nauk SSSR 443. pp. (In Russian).
   Google Scholar
• Öpik , A. 1925 . Beitrag zur Stratigraphie und Fauna des estonischen Unter-Cambrium (Eophyton-Sandstein) . Publications of the Geological Institution of the University of Tartu , 3 : 1 – 19 .
   Google Scholar
• Öpik , A. 1926 . Über den estländischen Blauen Ton . Publications of the Geological Institution of the University of Tartu , 6 : 39 – 46 .
   Google Scholar
• Öpik , A. 1956 . “ Cambrian (Lower Cambrian) of Estonia ” . In El sistema Cāmbrico, su paleogeografia y el problema de su base Edited by: Rodgers , J. 97 – 126 . Mexico.
   Google Scholar
• Parkhaev , P.Yu. 2006 . New data on the morphology of ancient gastropods of the genus Aldanella Vostokova, 1962 (Archaeobranchia, Pelagielliformes) . Palaeontological Journal , 40 : 244 – 252 .
   Web of Science ®Google Scholar
• Parkhaev , P.Yu. 2007 . Shell chirality in Cambrian gastropods and sinistral members of the genus Aldanella Vostokova, 1962 . Palaeontological Journal , 41 : 233 – 240 .
   Web of Science ®Google Scholar
• Peel , J. S. 1972 . Observations on some Lower Palaeozoic tremanotiform Bellerophontacea (Gastropoda) from North America . Palaeontology , 15 : 412 – 422 .
   Google Scholar
• Peel , J. S. 1976 . Musculature and systematic position of Megalomphala taenia (Bellerophontacea, Gastropoda) from the Silurian of Gotland . Bulletin of the Geological Society of Denmark , 25 : 49 – 55 .
   Google Scholar
• Peel , J. S. 1977 . Relationship and internal structure of a new Pilina (Monoplacophora) from the late Ordovician of Oklahoma . Journal of Paleontology , 51 : 116 – 122 .
   Web of Science ®Google Scholar
• Peel , J. S. 1982 . Muscle scars in Bellerophon recticostatus (Mollusca) from the Carboniferous of Ireland . Journal of Paleontology , 56 : 1307 – 1310 .
   Web of Science ®Google Scholar
• Peel , J. S. 1986 . Muscle scars in Porcellia (Gastropoda; Pleurotomariacea) from the Carboniferous of England . Bulletin of the Geological Society of Denmark , 35 : 53 – 58 .
   Google Scholar
• Peel , J. S. 1991 . The Classes Tergomya and Helcionelloida, and early molluscan evolution . Bulletin Gr⊘nlands Geologiske Unders⊘gelse , 116 : 11 – 65 .
   Google Scholar
• Peel , J. S. 1993 . Muscle scars and mode of life of Carinaropsis (Bellerophontoidea, Gastropoda) from the Ordovician of Tennessee . Journal of Paleontology , 67 : 528 – 534 .
   Web of Science ®Google Scholar
• Peel , J. S. 2001 . Musculature and asymmetry in a Carboniferous pseudo-bellerophontoidean gastropod (Mollusca) . Palaeontology , 44 : 157 – 166 .
   Web of Science ®Google Scholar
• Peel , J. S. 2003 . A problematic cap-shaped metazoan from the Lower Cambrian of Estonia . GFF , 125 : 157 – 161 .
   Web of Science ®Google Scholar
• Peel , J. S. 2004 . Asymmetry and musculature in some Carboniferous bellerophontiform gastropods (Mollusca) . GFF , 126 : 213 – 220 .
   Web of Science ®Google Scholar
• Posti , E. 1978 . Novye nahodki platysolenitid i gastropod iz lontovaskogo gorizonta Estonii. [New finds of platysolenitids and gastropods from the Lontova Stage in Estonia] . Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia , 27 : 103 – 107 . (In Russian).
   Google Scholar
• Raaben , M. E. , ed. 1981 . “ The Tommotian stage and the Cambrian Lower Boundary problem ” . In Trudy Geologicheskogo Instituta Akademii Nauk SSSR Vol. 206 , 359 (Translation by Amerind Publishing Co., New Delhi of Rozanov et al. 1969).
   Google Scholar
• Rasetti , F. 1954 . Internal shell structures in the Middle Cambrian gastropod Scenella and the problematic genus Stenothecoides . Journal of Paleontology , 28 ( 1 ) : 59 – 66 .
   Google Scholar
• Rozanov , A.Yu. 1973 . Zakonomernosti morfologitcheskoi evolutsii arheociat I voprosy jarusnogo rastschlenenija nizchnego kembrija. [Regularities in the morphological evolution of regular archaeocyathean and the problems of the Lower Cambrian stage division] 165 Trudy Geologicheskogo Instituta Akademii Nauk SSSR 241. pp. (In Russian).
   Google Scholar
• Rozanov , A.Yu. and Missarzhevsky , V. V. 1966 . Biostratigrafia i fauna nizchnih gorizontov kembrija. [Biostratigraphy and fauna of Lower Cambrian horizons.] 126 Trudy Geologicheskogo Instituta Akademii Nauk SSSR 148. pp. (In Russian).
   Google Scholar
• Rozanov , A.Yu. , Missarzhevsky , V. V. , Volkova , N. A. , Voronova , L. G. , Kryglov , I. N. , Keller , B. M. , Korolyuk , I. K. , Lendzion , K. , Michniak , N. G. , Pychova , N. G. and Sidorov , A. D. 1969 . Tommotskii jarus I problema nizchnei granitzy kembrija. [Tommotian Stage and the Cambrian lower boundary problem.] 380 Trudy Geologicheskogo Instituta Akademii Nauk SSSR 206. pp. (In Russian).
   Google Scholar
• Runnegar , B. 1981 . Muscle scars, shell form and torsion in Cambrian and Ordovician univalved molluscs . Lethaia , 14 : 311 – 322 .
   Web of Science ®Google Scholar
• Runnegar , B. and Jell , P. A. 1976 . Australian Middle Cambrian molluscs and their bearing on early molluscan evolution . Alcheringa , 1 : 109 – 138 .
   Web of Science ®Google Scholar
• Runnegar , B. and Pojeta , J. Jr. 1985 . “ Origin and diversification of the Mollusca ” . In The Mollusca 10, Evolution , Edited by: Trueman , E. R. and Clarke , M. R. 1 – 57 . Orlando : Academic Press .
   Google Scholar
• Schaler , N. S. and Foerste , A. F. 1888 . Preliminary description of North Attleborough fossils . Bulletin of the Museum of Comparative Zoology , 16 : 27 – 41 .
   Google Scholar
• Schimdt , F. 1888 . Über ein neuentdeckte unterkambrische Fauna . Memoires de L'Academie Imperiale des Sciences de St. Petersbourg, 7 ser. , 36 : 1 – 29 .
   Google Scholar
• Sokolov , B. S. and Zhuravleva , I. T. 1983 . Yarusnoe raschlenenie nizhnego kembriya Sibiri. Atlas okamenelostey [Lower Cambrian stage subdivision of the Siberia. Atlas of fossils] , 216 Trudy Institut geologii I geofiziki, Sibirskoi otdelenie . Akademii Nauk SSSR 558. pp. (In Russian).
   Google Scholar
• Ushatinskaya , G. T. and Parkhaev , P.Yu. 2005 . Preservation of imprints and casts of cells of the outer mantle epithelium in the shells of Cambrian brachiopods, mollusks and problematics . Palaeontological Journal , 39 : 251 – 263 .
   Web of Science ®Google Scholar
• Vidal , G. , Palacios , T. , Moczydlowska , M. and Gubanov , A. P. 1999 . Age constraints from small shelly fossils on the early Cambrian terminal Cadomian Phase in Iberia . GFF , 121 : 137 – 143 .
   Web of Science ®Google Scholar
• Vostokova , V. A. 1962 . Kembriiskye gastropody Sibirskoi platformy i Taimyra. [Cambrian gastropods from Siberian Platform and Taimyr] . Trudy Nauchno Issledovatelskogo Instituta Geologii Arktiki , 28 : 51 – 74 . (In Russian).
   Google Scholar
• Yochelson , E. L. and Gil Cid , D. 1984 . Reevaluation of the systematic position of . Scenella. Lethaia , 17 : 331 – 340 .
   Web of Science ®Google Scholar
• Zhegallo , E. A. 1983 . Yarusnoe raschlenenie nizhnego kembriya Sibiri. Atlas okamenelostey [Lower Cambrian stage subdivision of the Siberia. Atlas of fossils] , Edited by: Sokolov , B. S. and Zhuravleva , I. T. Vol. 558 , 96 – 101 . Trudy Institut geologii I geofiziki, Sibirskoi otdelenie, Akademii Nauk SSSR . (In Russian).
   Google Scholar