none 10.1144/SP286.31 Geological Society of London Geological Society of London 1881 30600944 65091 2024072310105300772 10.1144 2024-07-23T22:17:46Z 2007-12-13T11:54:24Z 16 Geological Society, London, Special Publications SP 0305-8719 2041-4927 12 13 2007 01 2007 286 1 P. Y. Parkhaev Paleontological Institute of the Russian Academy of Sciences, Profsoyuznaya 123, Moscow, 117997, Russia (e-mail: ) Abstract The oldest gastropods are known from the uppermost Nemakit-Daldynian to lowermost Tommotian deposits. However, to trace ancestry before this time, when most metazoans did not possess shells, is difficult. Study of the oldest gastropods, diagnosed and discussed here, sheds some light on the earliest stages of evolution of major gastropod branches. It appears that the subclass Archaeobranchia served as the base for this early radiation. 10 26 2007 01 2007 415 421 10.1144/SP286.31 https://doi.org/10.15223/policy-002 10.1144/SP286.31 https://www.lyellcollection.org/doi/10.1144/SP286.31 https://www.lyellcollection.org/doi/pdf/10.1144/SP286.31 https://pubs.geoscienceworld.org/books/book/1658/chapter/107485156/the-cambrian-basement-of-gastropod-evolution https://pubs.geoscienceworld.org/UrlRedirectHandler.ashx?routename=books&chapterdoi=10.1144/SP286.31&request=chapter Malacologia Golikov A. N. 185 15 1975 Systematics of prosobranch gastropods Golikov A. N., Starobogatov Y. I.Systematics of prosobranch gastropodsMalacologia197515185232 Transactions of the Zoological Institute of the Academy of Sciences USSR Golikov A. N. 4 176 1988 Questions of phylogeny and systematics of prosobranchian gastropod mollusc Golikov A. N., Starobogatov Y. I.Questions of phylogeny and systematics of prosobranchian gastropod molluscTransactions of the Zoological Institute of the Academy of Sciences USSR1988176477[in Russian] 10.1111/1475-4983.00198 Journal of Malacological Studies Haszprunar G. 367 54 1988 On the origin and evolution of major gastropod groups, with special reference to the Streptoneura Haszprunar G.On the origin and evolution of major gastropod groups, with special reference to the StreptoneuraJournal of Malacological Studies198854367441 Late Precambrian and Early Palaeozoic of Siberia: Questions of Regional Stratigraphy Khomentovsky V. V. 3 1990 Khomentovsky V. V., Valkov A. K., Karlova G. A., Khomentovsky V. V., Gibsher A. S.New data on the biostratigraphy of the transitional beds in the basin of Aldan RiverLate Precambrian and Early Palaeozoic of Siberia: Questions of Regional Stratigraphy1990Novosibirsk363[in Russian] Malacological Review Supplement Lindberg D. R. 35 1988 Lindberg D. R., Ponder W. F.The PatellogastropodaMalacological Review Supplement198843563Prosobranch Phylogeny Zoologicheskii Zhurnal Minichev Y. S. 293 58 1979 Subclasses of gastropod mollusc and their phylogenetic relationships Minichev Y. S., Starobogatov Y. I.Subclasses of gastropod mollusc and their phylogenetic relationshipsZoologicheskii Zhurnal197958293305[in Russian] Paleontologicheskii Zhurnal Parkhaev P. Y. 32 3 2000 Functional morphology of univalved molluscs—helcionellids. 1 Parkhaev P. Y.Functional morphology of univalved molluscs—helcionellids. 1Paleontologicheskii Zhurnal200033239 Paleontologicheskii Zhurnal Parkhaev P. Y. 20 35 2001 Functional morphology of univalved molluscs—helcionellids. 2 Parkhaev P. Y.Functional morphology of univalved molluscs—helcionellids. 2Paleontologicheskii Zhurnal2001352027 Paleontologicheskii Zhurnal Parkhaev P. Y. 25 36 2002 Phylogenesis and system of Cambrian univalved molluscs Parkhaev P. Y.Phylogenesis and system of Cambrian univalved molluscsPaleontologicheskii Zhurnal2002a362536 Paleontologicheskii Zhurnal Parkhaev P. Y. 15 36 2002 The muscle scars of the Cambrian univalved molluscs and its systematic significance Parkhaev P. Y.The muscle scars of the Cambrian univalved molluscs and its systematic significancePaleontologicheskii Zhurnal2002b361519 Paleontologicheskii Zhurnal Parkhaev P. Y. 27 38 2004 New data on the morphology of the shell muscles in Cambrian helcionelloid molluscs Parkhaev P. Y.New data on the morphology of the shell muscles in Cambrian helcionelloid molluscsPaleontologicheskii Zhurnal2004382729 10.34194/bullggu.v161.6717 US Geological Survey Professional Paper Pojeta J. 1 968 1976 The paleontology of rostroconch molluscs and the early history of the phylum Mollusca Pojeta J., Runnegar B.The paleontology of rostroconch molluscs and the early history of the phylum MolluscaUS Geological Survey Professional Paper1976968188 10.1111/j.1096-3642.1997.tb00137.x 10.1111/j.1502-3931.1981.tb01104.x Origin and Evolution of the Mollusca Runnegar B. 77 1996 Runnegar B., Taylor J.Early evolution of the Mollusca: the fossil recordOrigin and Evolution of the Mollusca1996OxfordOxford University Press7787 10.1080/03115517608619064 Major Problems of Animal Systematics Starobogatov Y. I. 12 1976 [On the subclasses of gastropod molluscs] Starobogatov Y. I., Shimansky V. N., Kabanov G. K., Dmitrieva E. L., Starobogatov Y. I., Trofimov B. A.[On the subclasses of gastropod molluscs]Major Problems of Animal Systematics1976MoscowPaleontologicheskii Institut AN SSSR1216[in Russian]