Abstract
Data on the detailed stratigraphic range of eight species of gastropod mollusks from the Upper Hauterivian of Ulyanovsk (Volga Region) are presented. A new genus, Trilemma, is established within the family Aporrhaidae. Two new species of this genus, T. russiense sp. nov. and T. striatocarinatum (Sinzow, 1880), are described.
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E. Yu. Baraboshkin, “Early Cretaceous Straits of the Russian Plate,” Byull. Mosk. O-va Ispyt. Prir., Otd. Geol. 78(4), 35–48 (2003).
A. L. Beisel, Late Jurassic and Early Cretaceous Gastropods from North-Central Siberia (Nauka, Moscow, 1983) [in Russian].
E. S. Chernova, “On the Age and Subdivision of the Simbirskites and Belemnite Sequences of the Volga Region,” Byull. Mosk. O-va Ispyt. Prir., Otd. Geol. 26(6), 46–81 (1951).
V. V. Drushchits, “On the Boundary between the Hauterivian and Barremian Stages,” Dokl. Akad. Nauk SSSR 147(4), 900–903 (1962).
P. A. Gerasimov, Gastropods of the Jurassic and the Jurassic-Lower Cretaceous Boundary Beds in European Russia (Nauka, Moscow, 1992) [in Russian].
A. E. Glasunova, “A New Neocomian Representative of Proceritids from the Volga Region,” Tr. Vses. Geol. Inst. Akad. Nauk SSSR, Nov. Ser., No. 2, Part 1, 295–296 (1968).
A. E. Glasunova, Paleontologically Based Stratigraphical Subdivision of the Cretaceous in the Volga Region: The Lower Cretaceous (Nedra, Moscow, 1973) [in Russian].
A. N. Golikov and Ya. I. Starobogatov, “Systematics of Prosobranch Gastropods,” Malacologia 15(1), 185–232 (1975).
A. N. Ivanova, “Bivalves, Gastropods, and Belemnites from the Jurassic and Cretaceous Beds of the Saratov Volga Region,” Tr. Vses. Nauch. Issl. Inst. Nefti i Geol. Razved., No. 137; 269–462 (1959).
K. A. Kabanov, “Evidence of a Reduction in the Salinity of the Hauterivian Sea in Ulyanovsk (Volga Region),” Dokl. Akad. Nauk SSSR 124(4), 893–895 (1959).
I. I. Laguzen, On Fossils from the Simbirsk Clay (St. Petersburg, 1874) [in Russian].
E. V. Milanovskii, “On the Age of the Simbirskites Beds and the Belemnite Sequence in the Volga Region,” Byull. Mosk. O-va Ispyt. Prir., Otd. Geol., Nov. Ser. 18(1), 11–35 (1940).
T. P. Morozova, A Paleobionomical Reconstruction of the Late Hauterivian Invertebrate Fauna of the Northern Caspian Region Showing the Importance of Taphonomical Observations for Such Reconstructions (Saratov Gos. Univ., Saratov, 1986) [in Russian].
Z. N. Poyarkova and P. R. Dzhalilov, Marine Gastropods of the Cretaceous on the Margins of Asia (Dal’nevost. Nauchn. Tsentr Akad. Nauk SSSR, Vladivostok, 1985) [in Russian].
I. S. Rogozin, Landslides in Ulyanovsk: Experience of Landslide Control (Akad. Nauk SSSR, Moscow, 1961) [in Russian].
I. G. Sasonova, “Lower Cretaceous Deposits of the Central Regions of the Russian Platform,” in Mesozoic and Tertiary Deposits of the Central Regions of the Russian Platform (Gostoptekhizdat, Leningrad, 1958), pp. 31–184 [in Russian].
I. A. Shumilkin, “On the Thickness of Simbirskites Beds in Ulyanovsk (Volga Region),” Problems of Stratigraphy of the Paleozoic, Mesozoic, and Cenozoic (Saratovsk. Gos. Univ., Saratov, 1993), Issue 7, pp. 165–168 [in Russian].
I. F. Sinzow, “Description of Some Species of Mesozoic Fossils from the Simbirsk and Saratov Regions,” Zap. Novorossiisk. O-va Estestvoispyt. 7(1), 1–12 (1880).
H. Trautschold, “Der Inoceramen-Thon von Simbirsk,” Bull. Soc. Imp. Nat. Moscou 38(1), 1–24 (1865).
A. Wollemann, “Nachtrag zu meinen Abhandlungen über die Bivalven und Gastropoden der Unteren Kreide Norddeutschlands,” Jb. Königl. Preuss. Geol. Landesanst. Berlin 29(2), 151–193 (1912).
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Original Russian Text © I.V. Blagovetshenskiy, I.A. Shumilkin, 2006, published in Paleontologicheskii Zhurnal, 2006, No. 1, pp. 33–42.
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Blagovetshenskiy, I.V., Shumilkin, I.A. Gastropod mollusks from the Hauterivian of Ulyanovsk (Volga Region): 1. Family aporrhaidae. Paleontol. J. 40, 34–45 (2006). https://doi.org/10.1134/S0031030106010047
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DOI: https://doi.org/10.1134/S0031030106010047