Stratigraphy and Geological Correlation

, Volume 25, Issue 2, pp 188–228 | Cite as

Ammonites and stratigraphy of the terminal part of the Middle Volgian Substage (Upper Jurassic; Epivirgatites nikitini zone and its equivalents) of the Panboreal Realm: 1. Late morphogenesis and systematics of Dorsoplanitinae

  • D. N. KiselevEmail author


Problems of correlation of the upper part of the middle Volgian beds of European Russia and Arctic regions with the Portlandian of England and northern France largely result from existing uncertainties in the taxonomy of the ammonite subfamily Dorsoplanitinae. The poor knowledge of the morphogenesis of this group precludes effective and stable taxonomy and recognition of parallelisms, thereby decreasing the group’s correlative-biostratigraphic potential. In Dorsoplanitinae, dimorphism is revealed in the differences in the terminal shell diameter and, to a lesser extent, in the sculpture, whereas apertural modifications characteristic of many Perisphinctoidea are not observed in members of this group. The middle Volgian Dorsoplanitinae are represented by minimorphs and macromorphs, taxonomically different at the species or genus level. The Volgian minimorphs are mainly represented by the genera Epivirgatites and Lomonossovella, whereas macromorphs are represented by Titanites s.l.; in the genus Taimyrosphinctes, micro- and macromorphs belong to different subgenera. All morphological types of Volgian Dorsoplanitinae have vicariate equivalents in the Portlandian, which can be used for the interregional correlations.


Volgian Stage Portlandian ammonites morphogenesis dimorphism systematics 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Akimushkin, I. I., Golovonogie mollyuski morei SSSR (Cephalopods of the Seas of the USSR), Moscow: Izd. Akad. Nauk SSSR, 1963 [in Russian].Google Scholar
  2. Arkell, W.J., The Jurassic System in Great Britain, Oxford: Clarendon Press, 1933.Google Scholar
  3. Arkell, W.J., Standard of the European Jurassic, Geology, 1946, vol. 57, no. 1, pp. 1–34.Google Scholar
  4. Arkell, W.J., A classification of the Jurassic ammonites, J. Paleontol., 1950, vol. 24, no. 3, pp. 354–364.Google Scholar
  5. Arkell, W.J., Jurassic Geology of the World, Edinburgh: Oliver and Boyd, 1956.Google Scholar
  6. Arkell, W.J., Kummel, B., and Wright, C.W., Mesozoic ammonoidea, in Treatise on Invertebrate Paleontology, Part L, Mollusca 4, Kanzas: Geol. Soc. Am. Univ. Kansas Press., 1957.Google Scholar
  7. Atlas Geologicheskikh Pamyatnikov Yaroslavskoi Oblasti (Atlas of Geological Monuments of the Yaroslavl Region), Kiselev, D.N., Baranov, V.N., Muravin, E.S.,, Eds., Yaroslavl: Yaroslav. Gos. Ped. Univ., 2003 [in Russian].Google Scholar
  8. Bayer, J., Zur ontogenie und variabilitat des Jurassischen ammoniten Leioceras opalinum, N. Jb. Geol. Palaont. Abh., 1972, vol. 140, no. 3, pp. 306–327.Google Scholar
  9. Brochwicz-Lewinski, W. and Rozak, Z., Peristomal modifications of Upper Jurassic perisphinctids (Ammonoidea), Bull. Acad. Pol. Sci., Ser. Sci. Terre, 1975, vol. 22, pp. 53–58.Google Scholar
  10. Brochwicz-Lewinski, W. and Rozak, Z., Some difficulties in recognition of sexual dimorphism in Jurassic perisphinctids (Ammonoidea), Acta Geol. Polon., 1976, vol. 21, no. 1, pp. 116–127.Google Scholar
  11. Buckman, S.S., Yorkshire Type Ammonites, London: Wesley, 1909–1930, vols. 1–7.Google Scholar
  12. Callomon, J.H., Sexual dimorphism in Jurassic ammonites, Trans. Leicester Liter. Philos. Soc., 1963, vol. LVII, pp. 21–56.Google Scholar
  13. Callomon, J.H. and Birkelund, T., The ammonite zones of the Boreal Volgian (Upper Jurassic) in East Greenland, in Arctic Geology and Geophysics, Embry, A.F. and Balkwill, H.R., Eds., Mem.—Can. Soc. Pet. Geol. 1982, no. 8, pp. 349–369.Google Scholar
  14. Callomon, J.H. and Cope, J.C.W., The Jurassic geology of Dorset, in Field Geology of the British Jurassic, Taylor, P.D., Ed., Geol. Soc. London, 1995, pp. 51–103.Google Scholar
  15. Casey, R., The position of the Middle Volgian in the English Jurassic, in Proc. Geol. Soc. London, 1967, no. 1640, pp. 246–247.Google Scholar
  16. Casey, R., The type section of the Volgian stage (Upper Jurassic) at Gorodishche, near Ulyanovsk, U.S.S.R, in Proc. Geol. Soc. London, 1968, no. 1648, pp. 74–75.Google Scholar
  17. Casey, R., The ammonite succession at the Jurassic–Cretaceous boundary in eastern England, in The Boreal Lower Cretaceous, Casey, R. and Rawson, P.F., Eds., eol. J., 1973, Spec. Iss., no. 5, pp. 193–266.Google Scholar
  18. Casey, R., Mesezhnikov, M.S., and Shul’gina, N.I., Correlation of Jurassic and Cretaceous boundary deposits of the Britain, Russian Platform, Sub-Polar Urals, and Siberia, Izv. Akad. Nauk SSSR, Geol., 1977, no. 7, pp. 14–33.Google Scholar
  19. Casey, R. and Mesezhnikov, M.S., Uppermost horizons of the Middle Volgian Substage and their English equivalents, Izv. Akad. Nauk SSSR, Geol., 1986, no. 10, pp. 69–81.Google Scholar
  20. Charpy, N. and Thierry, J., Dimorphisme et polymorphisme chez Pachyceras Bayle (Ammonitina, Stephanocerataceae) du Callovien Superieur (Jurassique Moyen), Haliotis, 1977, vol. 6, pp. 185–218.Google Scholar
  21. Denton, E.J. and Taylor, D.W., The composition of gas in the chambers of the cuttlebone of Sepia Officinalis, J. Mar. Biol. Assoc. U.K., 1964, vol. 44, no. 1, pp. 203–207.CrossRefGoogle Scholar
  22. Donovan, D.T., Callomon, J.H., and Howarth, M.K., Classification of the Jurassic Ammonitina, in The Ammonoidea (Syst. Assoc. Spec. Pap.), House H.R. and Senior J.R., Eds., 1981, vol. 18, pp. 101–155.Google Scholar
  23. Dzik, J., Sexual dimorphism in the virgatitid ammonites, in Proc. 3rd Pergola Int. Symp., Pergola, October 25–30, 1990, Palaeopelagos Spec. Publ., 1994, vol. 1, pp. 129–141.Google Scholar
  24. Enay, R., A propos du dimorphisme ches les ammonites Jurassiques. Quelques reflexions, Haliotis, 1977, vol. 6, pp. 97–118.Google Scholar
  25. Gerasimov, P.A., Migacheva, E.E., Naidin, D.P., and Sterlin, B.P., Jurassic and Cretaceous deposits on the Russian Platform, in Ocherki regional’noi geologii SSSR. Vyp. 5 (Essays on Regional Geology of the USSR. Vol. 5), Moscow: Mosk. Gos. Univ., 1962.Google Scholar
  26. Gerasimov, P.A. and Mikhailov, N.P., The Volgian Stage and unified stratigraphic scale of the upper series of the Jurassic System, Izv. Akad. Nauk SSSR, Geol., 1966, no. 2, pp. 118–138.Google Scholar
  27. Le Goff, R., Gauvrit, E., Pinczon Du Sel, G., and Daguzan, J., Determination by analysis of the cuttlebone of the cuttlefish Sepia officinalis l. in reproduction in the Bay of Biscay, J. Moll. Stud., 1998, vol. 64, pp. 183–193.CrossRefGoogle Scholar
  28. Gupta, P.K. and Oli, B.P., The life cycle and growth of the slug, Anadenus altivagus (Theobald) from Kumaon Himalayan forests, India, J. Moll. Stud., 1998, vol. 64, pp. 250–253.CrossRefGoogle Scholar
  29. Hölder, H., Uber gehausebau, insbesondere Hohlkiel Jurassischer ammoniten, Palaeontographica. Pt. A, 1952, vol. 102, nos. 1–2, pp. 18–48.Google Scholar
  30. Ivanov, A.N., The neotenic origin of Callovian ammonites of the genus Pseudocadoceras, in Sb. trudov po geologii i paleontologii (Materials on Geology and Paleontology), Syktyvkar: Komi Fil. Akad. Nauk SSSR, 1960, pp. 378–394.Google Scholar
  31. Ivanov, A.N., Problems of the periodization in ontogeny of ammonites, Uch. Zap. Yaroslav. Gos. Ped. Inst. Geol. Paleontol., 1971, vol. 87, pp. 76–119.Google Scholar
  32. Ivanov, A.N., Late ontogeny of ammonites and distinct features of micro, macro, and megaconchs, in Vopr. evolyutsii, ekologii i tafonomii pozdnemezozoiskikh ammonitov (Problems in Evolution, Ecology, and Taphonomy of Late Mesozoic Ammonites), Yaroslavl: Yaroslav. Gos. Ped. Inst, 1975, pp. 5–57.Google Scholar
  33. Ivanov, A.N. and Stumbur, Kh.A., On the stages of growth of modern nautilus shells, in Vopr. evolyutsii, ekologii i tafonomii pozdnemezozoiskikh ammonitov (Problems in Evolution, Ecology, and Taphonomy of Late Mesozoic Ammonites), Yaroslavl: Yaroslav. Gos. Ped. Inst., 1975, pp. 58–69.Google Scholar
  34. Ivanov, A.N., On the results of revision of the species Laugeites stschurowskii (Nikitin) in Pozdnemezozoiskie golovonogie mollyuski Verkhnego Povolzh’ya. (Late Mesozoic Cephalopods in the Upper Volga Region), Yaroslavl: Yaroslav. Gos. Ped. Inst., 1979, pp. 3–16.Google Scholar
  35. Ivanov, A.N., Baranov, V.N., and Muravin, E.S., Pamyatniki Prirody v Izuchenii Letopisi Zemli (s. Glebovo i Ego Okrestnosti) (Monuments of Nature at the Study of the Earth’s Evolution (Settlement of Glebovo and its Vicinities), Yaroslavl: Yaroslav. Gos. Ped. Inst., 1987 [in Russian].Google Scholar
  36. Khimshiashvili, N.G., Kamysheva-Elpat’evskaya, V.G., Bodylevskii, V.I., et al., Suprafamily Perisphinctaceae, in Osnovy paleontologii. Mollyuski—golovonogie. II. Ammonoidei (tseratity i ammonity), vnutrennerakovinnye (Fundamentals of Paleontology. Cephalopods. Pt. 2. Ammonoids (Ceratites and Ammonites), Endocochlians), Luppov, N.P. and Drushchits, V.V., Eds., Moscow: Gos. Nauchno-Techn. Izd. Liter. Geol. Okhrany Nedr, 1958, pp. 85–96.Google Scholar
  37. Kiselev, D.N., Morphogenesis and systematics of the genus Pseudocadoceras (Ammonoidea), Paleontol. Zh., 1996, no. 3, pp. 15–27.Google Scholar
  38. Kiselev, D.N. and Rogov, M.A., Infrazonal stratigraphy and ammonites of the Middle–Upper Volgian boundary beds of the European Russia, in Yurskaya sistema Rossii: problemy stratigrafii i paleogeografii (Jurassic System of Russia: Problems in Stratigraphy and Paleogeography), Moskva: Geol. Inst. Ross. Akad. Nauk, 2005, pp. 135–139.Google Scholar
  39. Kiselev, D.N., Baranov, V.N., Muravin E.S., et al., Ob”ekty Geologicheskogo Naslediya Yaroslavskoi Oblasti: Stratigrafiya, Paleontologiya i Paleogeografiya (Sites of Geological Heritage of the Yaroslavl Region: Stratigraphy, Paleontology, and Paleogeography), Moscow: ZAO Izd. Dom Yustitsinform, 2012 [in Russian].Google Scholar
  40. Kiselev, D.N., Taxonomic value of the final signs of growth in the morphogenesis of the ammonite subfamily Dorsoplanitinae Arkell, 1950 and its contribution to the family systematics, in Mater. nauchn. konf. “Sovremennye problemy izucheniya golovonogikh mollyuskov. Morfologiya, sistematika, evolyutsiya, ekologiya, biostratigrafiya” (Proc. Sci. Conf. “Contributions to current cephalopod research: Morphology, Systematics, Evolution, Ecology and Biostratygraphy”), Moscow: Paleontol. Inst. Ross. Akad. Nauk, 2015, pp. 55–58.Google Scholar
  41. Loriol, P. and Pellat, E., Monographie paléontologique et géologique des étages supérieurs de la formation Jurassique des environs de Boulogne-sur-Mer, Mém. Soc. Phys. Hist. Nat. Genéve. Extrait, 1874, vol. XXIII.Google Scholar
  42. Makowski, H., Problem of sexual dimorphism in ammonites, Paleont. Pol., 1962, no. 12.Google Scholar
  43. Marchand, D., Quelques precisions sur le polymorphisme dans la famille des Cardioceratidae Douville (Ammonoidea), Haliotis, 1977, vol. 6, pp. 119–140.Google Scholar
  44. Matyja, B.A., Developmental polymorphism in Oxfordian ammonites, Acta Geol. Pol., 1986, vol. 36, nos. 1–3, pp. 37–68.Google Scholar
  45. Meister, C., Ontogenese et evolution des Amaltheidae (Ammonoidea), Eclogae Geol. Helv., 1988, vol. 81, no. 3, pp. 763–841.Google Scholar
  46. Mesezhnikov, M.S., Kimeridzhskii i Volzhskii Yarusy Severa SSSR (Kimmeridgian and Volgian Stages of the North USSR), Leningrad: Nauka, 1984 [in Russian].Google Scholar
  47. Mikhailov, N.P., Zonal sequence of the Lower Volgian Stage and its equivalents, in Colloque du Jurassique, Luxembourg, 1962, pp. 381–390.Google Scholar
  48. Mignot, Y., Un probleme de paleobiologie chez les ammonoides (Cephalopoda): croissance et miniaturisation en Liaison avec les environnements, PhD Thesis (unpublished), 1992.Google Scholar
  49. Mikhailov, N.P., The zones of the Portlandian around Moscow, Byull. Mosk. Obshch. Ispyt. Prir. Otd. Geol., 1957, vol. 32, no. 5, pp. 143–159.Google Scholar
  50. Mikhailov, N.P., Zonal subdivision of the Volgian Stage and its analogues, in Dokl. sovetskikh geologov k I Mezhd. Koll. po yurskoi sisteme (Reports of Soviet Geologists on the Ist Int. Conf. on Jurassic System), Tbilisi: Izd. Akad. Nauk Gruz. SSR, 1962, pp. 185–199.Google Scholar
  51. Mikhailov, N.P., Boreal Jurassic ammonites (Dorsoplanitinae) and zonal subdivision of the Volgian Stage, in Tr. GIN AN SSSR (Proc. Geol. Inst. USSR Akad. Sci.), 1966, vol. 151, pp. 5–116.Google Scholar
  52. Michalsky, A.O., Ammonites of the Lower Volgian Stage, in Tr. Geol. Kom. (Proc. Geol. Com.), 1890, vol. VIII, no. 2, Iss. 1.Google Scholar
  53. Michalsky, A.O., Note on ammonites. 1. About the actual form of parabolic Perisphinctes shell mouths and equivalence of parabolic nodes to actual spiniform tubercles, characteristic of Aspidoceras and othwer ammonites, in Tr. Geol. Kom. (Proc. Geol. Com.), 1898, vol. 17, no. 2, pp. 67–132.Google Scholar
  54. Mina, M.V. and Klevezal, G.A., Rost zhivotnykh (Growth of Animals), Moscow: Nauka, 1976 [in Russian].Google Scholar
  55. Mitta, V.V., On the intraspecies variability of Jurassic ammonites, Paleontol. Zh., 1990, no. 1, pp. 49–54.Google Scholar
  56. Mitta, V.V., Ammonity i zonal’naya stratigrafiya srednevolzhskikh otlozhenii Tsentral’noi Rossii (Ammonites and Zonal Stratigraphy of Middle Volgian Deposits of the Central Russia), Kiev: Geoprognoz, 1993 [in Russian].Google Scholar
  57. Mitta, V.V., The systematics of the Middle Volgian Dorsoplanitidae (Ammonoidea) of the Central Russia, Paleontol. Zh., 1994, no. 1, pp. 27–37.Google Scholar
  58. Muravin, E.S., Ammonites of the genus Lomonossovella from Middle Volgian Beds in environs of the village of Glebovo, Yaroslavl Region, in Pozdnemezozoiskie golovonogie mollyuski Verkhnego Povolzh’ya (Late Mesozoic Chephalopods of the Upper Volga Region), Yaroslavl: Yaroslav. Gos. Ped. Inst., 1979, pp. 17–28.Google Scholar
  59. Muravin, E.S., Volgian ammonites of the Yaroslavl Region, Cand. Sci. (Geol.–Mineral.) Dissertation, Moscow: Mosk. Gos. Univ., 1989.Google Scholar
  60. Neumayr, M., Die ornatenthone von Tschulkowo und des stelling des Russischen Jura, in Geognostishe-Paläontologishe Beitrage. Bd. II, Benecke, W. E. Ed., Müenchen, 1876, pp. 321–368.Google Scholar
  61. Nikitin, S.N., Jurassic formations between Rybinsk, Mologa, and Myshkin, in Mater. Geol. Kom. (Proc. Geol. Com.), 1881, vol. 1, no. 2Google Scholar
  62. Nikitin, S.N., General geological map of Russia. Sheet 56. Yaroslavl, in Tr. Geol. Kom. (Proc. Geol. Com.), 1884, vol. 1, no. 2.Google Scholar
  63. Nikitin, S.N., From excursions to Western Europe, Izv. Geol. Kom., 1889, vol. 7, pp. 361–408.Google Scholar
  64. Palframan, D.F.B., Taxonomy of sexual dimorphism in ammonites: morphogenetic evidence in Hecticoceras brightii (Pratt), Int. Union Geol. Sci. Ser. A, 1969, no. 1, pp. 126–154.Google Scholar
  65. Pavlov, A.P., Sravnitel’naya stratigrafiya boreal’nogo mezozoya (Comparative Stratigraphy of Boreal Mesozoic), Moscow: Nauka, 1965 [in Russian].Google Scholar
  66. Pavlow, A., Etudes sur les couches Jurassiques et Cretacees de la Russie. 1. Jurassique superieur et Cretace inferieur de la Russie et d’Angleterre, Bull. Soc. Natur. Moscow. N. Ser., 1890, vol. 3, pp. 61–127.Google Scholar
  67. Pruvost, P., Les subdivisions du Portlandien boulonnais d’apres les ammonites, Ann. Soc. Geol. Nord., 1925, vol. 49, pp. 187–215.Google Scholar
  68. Rogov, M. and Zakharov, V., Ammonite-and bivalvebased biostratigraphy and Panboreal correlation of the Volgian Stage, Sci. China, Ser. D: Earth Sci., 2009, vol. 52, no. 12, pp. 1890–1909.CrossRefGoogle Scholar
  69. Rogov, M.A., New data on ammonites and stratigraphy of the Volgian stage in Spitzbergen, Stratigr. Geol. Correl., 2010, vol. 18, no. 5, pp. 505–531.CrossRefGoogle Scholar
  70. Rogov, M.A., Dimomorphysm and polimorphism of boreal and subboreal Volgian ammonites (Dopsoplanitidae, Craspeditidae, Virgatitidae), in Yurskaya sistema Rossii: problemy stratigrafii i paleogeografii. Pyatoe Vseross. soveshch., 23–27 sentyabrya 2013 g., Tyumen’. Nauchn. mater. (Proc. VAll-Russ. Conf. “Jurassic System of Russia: Problems in Stratigraphy and Paleogeography”. September 23–27, 2013, Tyumen), Ekaterinburg: OOO Izd. dom IzdatNaukaServis, 2013, pp. 187–190.Google Scholar
  71. Rosanov, A.N., On the Portlandian zones of the Moscow region and on the possible origin of the phosphate beds near Moscow, in Materialy k poznaniyu geologicheskogo stroeniya Rossiiskoi Imperii (Materials for Understanding the Geological Structure of the Russian Empire), 1913, vol. 4, pp. 17–103.Google Scholar
  72. Rosanov, A.N., Geological survey in the southern part of sheet 90 (a preliminary report), Izv. Geol. Kom., 1918, Vol. XXXVII, no. 2, pp. 441–456.Google Scholar
  73. Rosanov, A.N., On the zonal classification of Lower Volgian deposits in the Simbirsk Province, Izv. Mosk. Otd. Geol. Kom., 1919, vol. 1, pp. 193–204.Google Scholar
  74. Ruzhentsev, V.E., Superorder Ammonoidea. General section, in Osnovy paleontologii. Mollyuski—golovonogie. I (Fundamentals of Paleontology. Vol. 5. Mollusca—Cephalopoda) Ruzhentsev, V.E., Ed., Moscow: Izd. Akad. Nauk SSSR, 1962, pp. 243–328.Google Scholar
  75. Sasonova, I.G. and Sasonov, N.T., The Jurassic–Cretaceous boundary in the East European Platform, Aspekte der Kreide Europas. Int. Union Geol. Sci. Ser. A, 1979, no. 6, pp. 487–496.Google Scholar
  76. Sauvage, H.E., Sur Quelques du Jurassique superieur du Bulonnais, Bull. Soc. Géol. France. Sér. 4, 1911, vol. XI, pp. 454–464.Google Scholar
  77. Sazonov, N.T., Yurskie otlozheniya tsentral’nykh oblastei Russkoi platformy (Jurassic Deposits of the Central Areas of the Russian Platform), Leningrad: Gostoptekhizdat, 1957 [in Russian].Google Scholar
  78. Shmalgauzen, I.I., Determination of Main Definitions and Growth Research Methods, in Rost zhivotnykh (Growth of Animals), Moscow: Gos. Izd. Biol. Med. Liter., 1935, pp. 8–60.Google Scholar
  79. Spath, L.F., Revision of the Jurassic Cephalopod fauna of the Kachh (Cutch). Pt. IV, Paleont. Indica. N.S., 1931, vol. IX, no. 2, pp. 279–550.Google Scholar
  80. Spath, L.F., The Upper Jurassic invertebrates faunas of Cape Leslie, Milne Lands, Upper Kimmeridgian and Portlandian, Medd. Grønland, 1936, vol. XCIX, no. 3.Google Scholar
  81. Tintant, H., Le polymorphisme intraspecifique en paleontologie (exemples pris ches les ammonites), Haliotis, 1977, vol. 6, pp. 49–69.Google Scholar
  82. Trautschold, G., Der franzosische Kimmeridge und Portland verglichen mit den gleichaltrigen Moskauer schichten, Bull. Soc. Nat. Moscou, 1876.Google Scholar
  83. Vischniakoff, N.P., Observations sur la derniere loge de Quelques ammonites de Russie, Bull. Soc. Nat. Moscou, 1878, vol. 53, no. 1, pp. 39–55.Google Scholar
  84. Vischniakoff, N.P., Description des Planulati (Perisphinctes) Jurassiques de Moscou, 1882, Pt. 1.Google Scholar
  85. Wimbledon, W.A., The Stratigraphy and Ammonite Faunas of the Portland Stone of England and Northern France. PhD Thesis (unpublished), 1974.Google Scholar
  86. Wimbledon, W.A. and Cope, J.C.W., The ammonite faunas of the English Portland beds and the zones of the Portlandian stage, J. Geol. Soc. (London, U. K.), 1978, vol. 135, no. 2, pp. 183–190.CrossRefGoogle Scholar
  87. Wimbledon, W.A., The Portlandian, the terminal Jurassic Stage in the Boreal Realm, in Proc. Int. Symp. on Jurassic Stratigraphy. Erlangen, September 1–8, 1984, vol. 2, pp. 534–549.Google Scholar
  88. Wood, J.B. and O’Dor, R.K., Do larger cephalopods live longer? Effects of temperature and phylogeny on interspecific comparisons of age and size at maturity, Mar. Biol. (Berlin), 2000, vol. 136, pp. 91–99.CrossRefGoogle Scholar
  89. Zakharov, V.A. and Mesezhnikov, M.S., Volzhskii yarus Pripolyarnogo Urala (The Volgian Stage of the Sub-Polar Urals), Novosibirsk: Nauka, 1974 [in Russian].Google Scholar
  90. Zakharov, V.A. and Rogov, M.A., The upper Volgian Substage in Northeast Siberia (Nordvik Peninsula) and its Panboreal correlation based on ammonites, Stratigr. Geol. Correl., 2008, vol. 16, no. 4, pp. 423–436.CrossRefGoogle Scholar
  91. Zakharov, Yu.D. and Krivoshapkina, B.C., Peculiarities of the growth and duration of shell-building in coiled ammonoids, in Paleozool. Sb. Tr. Biol.–Pochv. Inst. (Collection of Works in Paleozoology Biol.–Soil Inst.), 1976, vol. 38, no. 141, pp. 34–72.Google Scholar
  92. Ziegler, B., Ober dimorphismus und verwandtschaftsbeziehungen bei “Oppelien” des oberen Juras (Ammonoidea: Haplocerataceae), Stuttgarter Beitr. Naturk. Ser. B, 1974, no. 11.Google Scholar
  93. Zonov, N.T., Geological overview of Jurassic and Cretaceous of phosphorite-bearing deposits in the Volga River basin between towns of Myshkin and Rybinsk (geological research works in 1929), in Tr. Nauch. Inst. po udobreniyam im. Ya.V. Samoilova (Proc. Ya.V. Samoilov Sci. Inst. Fertilizers), 1934, vol. 119.Google Scholar
  94. Zonov, N.T, Jurassic and Cretaceous deposits of the Republic of Tatarstan, in Geologiya Tatarskoi SSR i prilegayushchei territorii v predelakh 109 lista. Chast’ 1. Vyp. 30 (Geology of the Tatar SSR and Adjacent Areas within Sheet 109. Part 1. Iss. 30), Moscow–Leningrad: GONTI, 1939, pp. 151–220.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  1. 1.Yaroslavl State Pedagogical UniversityYaroslavlRussia

Personalised recommendations