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Late Cretaceous (Turonian – Coniacian) Irregular Echinoids of Western Kazakhstan (Mangyshlak) and Southern Poland (Opole)

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Late Cretaceous (Turonian – Coniacian) Irregular Echinoids of Western Kazakhstan (Mangyshlak) and Southern Poland (Opole) Acta Geologica Polonica, Vol. 57 (2007), No. 1, pp. 1-87 Late Cretaceous (Turonian – Coniacian) irregular echinoids of western Kazakhstan (Mangyshlak) and southern Poland (Opole) DANUTA OLSZEWSKA-NEJBERT Faculty of Geology, Warsaw University, Al. ˚wirki i Wigury 93, PL-02-089 Warszawa, Poland. E-mail: [email protected] ABSTRACT: OLSZEWSKA-NEJBERT, D. 2007. Late Cretaceous (Turonian – Coniacian) irregular echinoids of western Kazakhstan (Mangyshlak) and southern Poland (Opole). Acta Geologica Polonica, 57 (1), 1-87. Warszawa. During the Late Cretaceous, both Mangyshlak and the Opole area were part of the North European Province, and irregular echinoid faunas during the Turonian and Coniacian in both areas were dominat- ed by holasteroids and spatangoids, in particular by Plesiocorys, Echinocorys and Micraster. Almost 1,000 specimens from both areas have been studied. Taxonomically more varied are the fau- nas from Mangyshlak (15 species in 6 genera); the Opole assemblages comprise 9 species in 3 genera. One species, Micraster (Micraster) praerogalae, a transitional form between Micraster (Micraster) cortestu- dinarium (GOLDFUSS) and Micraster (Micraster) rogalae NOWAK, is described as new. Micraster (Micraster) rogalae is markedly diachronous within the North European Province, first appearing in the late Coniacian in Mangyshlak and reaching central and western Europe during the late Early Santonian. A similar pattern is revealed by a large morphotype of Echinocorys ex gr. scutata LESKE. Palaeoecological and actualistic data show the taxa studied to have been shallow infaunal (Catopygus), shallow epifaunal [Conulus (Conulus) subrotundus], deeper infaunal [Micraster (Micraster)], deeper semi-infaunal [Micraster (Gibbaster), Plesiocorys (Sternotaxis) plana], deeper epifaunal [Echinocorys, Plesiocorys (Plesiocorys) placenta], and deeper infaunal (Hemiaster). Echinoid bioevents described originally from the Salzgitter-Salder section (Lower Saxony, Germany) can also be recognised in the Opole area, but not further afield in Mangyshlak. Key words: Irregular echinoids, Mangyshlak, Poland, Taxonomy, Palaeoecology, Upper Cretaceous, North European Province. INTRODUCTION members of the orders Spatangoida and Hola- steroida. The former is represented mainly by the Irregular echinoids first appeared in the Early genus Micraster, the latter by Echinocorys. Jurassic and diversified markedly during the During the Late Cretaceous both Mangyshlak Cretaceous and Cenozoic, attaining a near-world- and the Opole area were situated in the North wide distribution. In the Turonian and Coniacian European Province, stretching from Ireland (i.e. (Late Cretaceous), the group was dominated by the Atlantic coast) in the west to the western out- 2 DANUTA OLSZEWSKA-NEJBERT Fig. 1. Location of Mangyshlak and Opole in the North European Province on a palaeogeography map of the Late Cretaceous (after TRÖGER 1989) skirts of Central Asia (e.g. KAUFFMAN 1973). The Expedition to that area, sponsored by the National Opole area represents the central-western part of Committee of Scientific Research, KBN, No. 6 this province, whereas Mangyshlak constitutes its 6218 92 03, and organized and realized by Ryszard marginal, south-easterly portion (see Text-fig. 1). MARCINOWSKI, Ireneusz WALASZCZYK (both Irregular echinoids from both these areas plus University of Warsaw), Ludmila KOPAEVICH additional, comparative material from England, (University of Moscow) and the author. Further France, Germany and the Czech Republic, enable a collecting at Opole in 1995-1996 was possible comprehensive study of this group in the eastern thanks to a grant of the National Committee of the part of the North European Province during the Scientific Research (KBN), No. 6 PO4D 008 09. Turonian and Coniacian. The echinoid collection studied comprises almost 1,000 specimens, most of them well enough PREVIOUS STUDIES OF TURONIAN – preserved to be subjected to biometric and simple CONIACIAN IRREGULAR ECHINOIDS statistic analysis. Species well represented in this FROM MANGYSHLAK AND OPOLE material are characterized statistically. In most cases, the mode of life of particular species as well Mangyshlak as their ecological preference can be reconstructed. Biozonation of sections studied follows The first record of Late Cretaceous echinoids WALASZCZYK (1992, with additional comments by from Mangyshlak was that by SEMENOV (1899), who WALASZCZYK 2000, WALASZCZYK & WOOD 1998, recognized 32 species representing 14 orders of reg- 1999) and MARCINOWSKI & al. (1996). ular and irregular taxa. However, he did not illus- Field work in the Opole area was carried out in trate any Turonian or Coniacian species. His 1991 and 1993-1995, and at Mangyshlak in 1992, Holaster planus (SEMENOV 1899, p. 15), from the within the framework of the Polish Scientific Besakty section, is specifically indeterminate, and LATE CRETACEOUS IRREGULAR ECHINOIDS 3 most probably is a Cenomanian species. Similarly, and Spatangus cf. planus, which probably are con- his Micraster sp. (cf. cor anguinum? AG.) (SEMENOV specific with Plesiocorys (Sternotaxis) plana. Holaster 1899, p. 15), from the Maastrichtian, must be a dif- planus MANTELL [probably Plesiocorys (Sternotaxis) ferent species. MOSKVIN (1959) illustrated Late plana] and Micraster breviporus AGASSIZ [probably Cretaceous echinoids from the northern Caucasus M. (Micraster) leskei] were also listed by LEONHARD and Crimea. Two of his species, i.e. Holaster planus (1897), who compiled a monograph on Silesian fos- MANTELL [described here as Plesiocorys (Plesio- sils based on his own collections and in part used corys) placenta (AGASSIZ)] from the Upper ROEMER’s (1870) material. Turonian] and Micraster rogalae NOWAK from the A complete echinoid list, ascribed roughly to upper Coniacian, are illustrated by specimens from inoceramid zones, was published subsequently by Mangyshlak. In many subsequent papers on Late BIERNAT (1960), who identified the following Cretaceous faunas from Mangyshlak, echinoids species: often appear in faunal lists only and systematic descriptions have never been given (see TRIFONOV (i) Bolko Quarry: Cidaris sp., Holaster planus & BURAGO 1960, TRIFONOV & VASILENKO 1963, MANTELL and Micraster cortestudinarium AGASSIZ ENDELMAN 1971, MOSKVIN & ENDELMAN 1972, from the Scaphites geinitzi Zone, and Micraster SCHMIDT & al. 1973). Extensive lists were published cortestudinarium AGASSIZ from the Inoceramus by ENDELMAN (1971) and MOSKVIN & ENDELMAN lamarcki Zone; (1972) in particular. The latter authors recognised (ii) Piast Quarry: Micraster cortestudinarium 47 species from the Upper Cretaceous of AGASSIZ from the Inoceramus lamarcki Zone; Mangyshlak, most of them irregular, representing, (iii) Odra Quarry: Micraster cortestudinarium according to them, the subfamilies Micrasterinae AGASSIZ from the Scaphites geinitzi Zone, and Echinocorynae (order Spatangoida in Ananchytes ovatus LESKE? and Micraster breviporus MOSKVIN & ENDELMAN 1972); in comparison, rep- AGASSIZ from the Inoceramus lamarcki Zone. resentatives of the orders Holectypoida and His Micraster cortestudinarium probably refers Cassiduloida are rare. In addition, MOSKVIN & to Micraster (M.) leskei, and his M. breviporus is syn- ENDELMAN (1972) emphasized the close relation- onymous with M. (M.) leskei. ship between echinoid faunas from Mangyshlak Micraster leskei and Sternotaxis planus [sic] were and those from the southern part of the Russian listed from the Opole Cretaceous by NASTAJ- Platform (compare SAVCHINSKAYA 1967), the Fore- SOBCZYK & TARKOWSKI (1989) from the upper part Carpathians (compare GINDA 1965, 1968) and the of the Inoceramus lamarcki Zone and from the Crimea. SAVCHINSKAYA (1982) illustrated Conulus Inoceramus perplexus (=costellatus of authors) subrotundus and Micraster rogalae from Mangyshlak Zone, in addition to Micraster (Gibbaster) sp. and in her paper on echinoids of the Caspian Echinocorys gravesi DESOR from the latter zone. Depression. Descriptions and illustrations of Sternotaxis plana, More recently, echinoids were listed from Echinocorys gravesi, Micraster leskei, M. corbovis Mangyshlak, inclusive of range charts for selected FORBES and Micraster decipiens (BAYLE) [= M. sections by NAIDIN & al. (1984). cortestudinarium here] were supplied by TARKOWSKI (1991). FOURAY & TARKOWSKI (1991) described Opole Micraster leskei from the European Turonian, dis- cussed its stratigraphical value, and studied the mor- The first note on echinoid faunas from the phological range of variation of this taxon, consider- Opole Cretaceous was published by ROEMER ing Micraster corbovis FORBES to be a variety. (1870), who described Cenomanian – Turonian deposits, collected numerous fossils, and recorded Micraster leskei D’ORBIGNY, Ananchytes ovata LOCALITIES IN MANGYSHLAK LAMBERT, and Holaster planus AGASSIZ; the latter species probably is Plesiocorys (Sternotaxis) plana Cretaceous and Cenozoic strata are exposed in (MANTELL). His Ananchytes ovata most likely repre- limbs of the Central Mangyshlak Anticlinorium sents Echinocorys gravesi (DESOR). QUENSTEDT and the Tumgatchi Anticline, their axial portions (1872-1875) illustrated Spatangus cf. subglobosus being composed of Permo-Triassic and Jurassic 4 DANUTA OLSZEWSKA-NEJBERT Fig. 2. Schematic geologic sketch-map of the study area in Mangyshlak (A – after BIESPALOV & al. 1965, simplified) with main geo- tectonic and geomorphologic units the area (B), and map of Europe and western Asia (C) [after MARCINOWSKI & al. 1996] deposits (Text-fig. 2). The axial portion
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