Alexander Guzhov

Alexander Guzhov
Russian Academy of Sciences | RAS · Paleontological Institute

PhD

About

35
Publications
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204
Citations
Introduction

Publications

Publications (35)
Article
Full-text available
A new genus, Progadilinoides, with the type species P. balakovensis sp. nov. is described from the lower Aptian of the Volga Region and determined as a representative of the family Pulsellidae. The genus Progadilina Palmer, 1974 has been transferred to the same family.
Article
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Parthenina modesta (Sorgenfrei, 1958) is described from the Tarkhanian of the Eastern Paratethys. The species was previously known only from the Miocene of the North Sea.
Article
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Small gastropods from the Jurassic deposits of the European Russia, united into the lower Heterobranchia or Allogastropoda, are described. The families of Ampezzanildidae, Cimidae, Cornirostridae, Ebalidae, and Stuoraxidae are distinguished, and a set of taxa is given without reference to a definite family. The family Ampezzanildidae from the Juras...
Article
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The Oxfordian–Kimmeridgian Cerithiopsidae, represented by two genera Cosmocerithium Cossmann, 1906 and Dragonia gen. nov. are re-investigated. Three species (C. renardi (Rouillier, 1849), C. pumilum (Gerasimov, 1992), and C. veliger sp. nov.), representing the same phylogenetic line, are distinguished in the genus Cosmocerithium. These species form...
Article
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The history of the study and review of generic and species diversity of Mesozoic rissoid gastropods are provided. The generic composition of Jurassic rissoid gastropods is revised, so that it is proposed to regard them as the family Rissoidae, comprising the genera Bralitzia, Buvignieria, Palaeoceratia, and Palaeorissoina. It is tentatively propose...
Article
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A new genus, Boreomica gen. nov., is established; it comprises small-sized gastropods widespread in the Jurassic of the Russian Plate, the taxonomic position of which was ambiguously treated by previous authors. The new genus is assigned to the family Rissoidae. The species composition and stratigraphical and geographical distribution of the genus...
Article
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Revised list of specific composition of the Jurassic rissoid gastropods was proposed with their generic identity. They were introduced in Rissoidae family as following genera: Boreomica Guzhov, Bralitzia Gründel, Buvignieria Cossmann, Palaeoceratia Gründel, and Palaeorissoina Gründel. Genus Hudlestoniella Cossmann, 1909 was finally excluded from Ri...
Conference Paper
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Evolution of views on the family Ceritellidae, which actually after their erection were considered as nerineas, taking the key position within the latter group, has been reviewed. Ceritellidae was positioned as a group of most primitive and commonly unplicated nerineas, ancestral for most nerineids. Later the basic morphological features of nerinea...
Conference Paper
Full-text available
23-26 июля 2017 г. Геология и биоразнообразие ТЕТИСА И ВОСТОЧНОГО ПАРАТЕТИСА Геология и биоразнообразие ТЕТИСА И ВОСТОЧНОГО ПАРАТЕТИСА Всероссийская научно-практическая конференция, Горячий Ключ, 23-26 июля 2017 г. Горячий Ключ 2017
Conference Paper
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Minchinellids are calcareans with rigid skeleton composed of articulated, occasionally cemented, spicules (Vacelet 2012, Vacelet et al. 2002). Despite their resistant skeletons, they are not common in the fossil record. The oldest minchinellid, Muellerithalamia Reitner, 1987, is reported from the Upper Jurassic of Germany (Finks and Rigby 2004). It...
Article
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The scaphopod families Pulsellidae and Gadilidae from sandy and clayey beds of the Jurassic (Callovian‒ Volgian) of European Russia are investigated. In Pulsellidae, the following taxa are described: Annulipulsellum with two subgenera, Annulipulsellum (species A. ambiguum sp. nov., A. rugosum sp. nov.) and Mesopulsellum subgen. nov. (A. alternoides...
Conference Paper
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Shelly mollusks have been extensively used as models for developing methods of paleoecological reconstructions. However, contradictions between these data and similar reconstructions based on plankton groups are increasing: plankton records constantly point to more open marine basins. To resolve these contradictions, it is proposed to use compariso...
Article
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Cap-shaped gastropods are first identified in Upper Jurassic and Lower Cretaceous sections of northern East Siberia. They belong to three new genera of the subclass Pectinibranchia (Boreioconus gen. nov., Nixepileolus gen. nov., and Taimyroconus gen. nov.), which are identified at the species level (B. bojarkensis sp. nov., N. depressus sp. nov., T...
Conference Paper
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All known findings of the heteromorph ammonites of the genus Parapatoceras from the Lower Callovian of European Russia are reviewed. They come from the upper part of the Curtilobus Subzone of the Koenigi Zone of Kostroma, Nizhny Novgorod, Saratov, Volgograd and Kursk regions. There are two heteromorph species – P. tuberculatum and P. distans. The f...
Article
The breakup of Pangea and onset of growth of the Pacific plate led to several paleoenvironmental feedbacks, which radically affected paleoclimate and ocean chemistry during the Jurassic. Overall, this periodwas characterized by intense volcanic degassing from large igneous provinces and circum-Panthalassan arcs, new oceanic circulation patterns, an...
Article
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Kimmeridgian-Volgian Aporrhaidae from European Russia are described for the first time. They are referred to three genera, including two new genera, Undoriptera gen. nov. and Volgacheilus gen. nov. with three new species, Undoriptera tridactylus sp. nov., Volgacheilus rogovi sp. nov., and Dicroloma tenuistriata sp. nov.
Article
Full-text available
The breakup of Pangea and onset of growth of the Pacific plate led to several paleoenvironmental feedbacks, which radically affected paleoclimate and ocean chemistry during the Jurassic. Overall, this period was characterized by intense volcanic degassing from large igneous provinces and circum-Panthalassan arcs, new oceanic circulation patterns, a...
Article
Full-text available
A new subgenus and species of the family Discohelicidae, Discohelix (Amerevohelix) alekseevi subgen. et sp. nov., from the clayey-carbonate beds of the Middle Callovian of the Moscow Region is described.
Article
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The study focuses on Oxfordian-Kimmeridgian ostracods from the Mikhalenino section (Kostroma region, Russia). In the Upper Oxfordian - Lower Kimmeridgian (Densiplicatum - Bauhini ammonite Zones) we distinguished ostracod zones: Sabacythere attalicata - Eucytherura costaeirregularis (Densiplicatum Zone), Eucyterura - Tethysia (Tenuiserratum to Bauhi...
Article
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Lower Cretaceous gastropods are described for the fi rst time from the Krest Quarry, nowadays located within the Yaroslavl’ city limits. Gastropods were collected from a concretionary sandstone layer dated as Lower Hauterivian, Pavlovites polyptichoides Zone. The assemblage includes Ampullospira sp., Eucyclus aff. alboaptiensis (Sinzow), ?Sulcoacta...
Article
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Based on the studying of gastropods collected by P.A. Gerasimov from the Cretaceous beds of the Volga region, four new species are established: Avellana hauteriviensis sp. nov. from the Upper Hauterivian of the Ulyanovsk region, “Palaeorissoina” sokolovensis sp. nov., O. sinzowi sp. nov., and Nerineopsis turritum sp. nov. from Lower Aptian of the S...
Article
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The morphology and ontogeny of Jurassic gastropods those have been included in the genera Clathrobaculus Cossmann, 1912 and Gordenella Gründel, 1990 are discussed. Based on the ontogenetic research of their shells, several types of ontogeny are established in the species of these genera. The suggestion is made that the genus Gordenella should be co...
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Paleontological Institute, Rilssian Acaderqiy of Sciences, Profsoyzrzna,va 123, Moscow 11 7997, RUSSIA; e-mail: avgzizlzov.paleo@r~iail.r~~ ABSTRACT. Systematic position of the species "Fziszrs clathratus" Lahusen, 1883 is discussed. It is suggested to be placed in the tribe Eucyclini of the family Trochidae under a new name Ger*asir~~ovc~~clz~s ln...
Article
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Two gastropod assemblages from the Lower Callovian of the Kostroma Region and the Middle Callovian of the Yaroslavl’ Region are studied and compared with synchronous assemblages of the Kostroma, Moscow, Bryansk, and Kursk regions. It is suggested that gastropods from the Yaroslavl’ and Kostroma regions inhabited colder water basins than gastropods...
Article
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A gastropod with unusual morphology was found in the Upper Jurassic of Central European Russia. It is assigned to a new family Berendinellidae fam. nov., as Berendinella rossica gen. et sp. nov. This family is preliminarily referred to the superfamily Ce- rithiopsoidea. TaIIbliOfi YacTM HeMHOrO OTBepHYTbI. CTOII~HK npOAOn- xaeTcn B Buae ~e6on~~n1.0...
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The study is devoted to Jurassic gastropods of the Central and Central Chernozem regions of Russia. Thanks to the exact locality data on the collected material, the stratigraphic ranges of many species were refined. Several beds are recognized by the change in the dominant gastropod species in the Middle and Upper Jurassic clay sediments. Detailed...
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The study of Jurassic gastropods from Central Russia revealed three genera met for the first time in the region under discussion, i.e., Teutonica Schröder, 1995, Longaevicerithium gen. nov., and Novoselkella gen. nov. The structure of embryonic and postembryonic whorls of these gastropods suggests that the genus Teutonica belongs to the family Prot...
Article
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On the base of the protoconch structure, the subgenus Plicacerithium Gerasimov, 1992, of the genus Procerithium is reconsidered as a separate genus and moved from the family Procerithiidae to the family Epitoniidae. Several other genera from the Triassic and Jurassic are also assigned to the family for the first time, thus expanding the existing ra...

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