Lower Ordovician cystoids (Rhombifera, Diploporita) from the Prague Basin (Czech Republic)

 

Authors: Mergl M, Prokop JR

Published in: Bulletin of Geosciences, volume 81, issue 1; pages: 1 - 15; Received 23 May 2005; Accepted in revised form 12 January 2006;

Keywords: Cystoidea, Rhombifera, Diploporita, taxonomy, Tremadocian, Prague Basin, Bohemia, Czech Republic,

full text (PDF, 1.82 MB)

Export to RIS

 

Abstract

Seven cystoid taxa, including one new species, are described or re-described from the Třenice and Mílina formations (Lower Ordovician, upper Tremadocian) of the Prague Basin: Macrocystella cf. greylingi, Echinosphaerites concomitans, E. sp., Glyptosphaerites ferrigena, Paleosphaeronites crateriformis, P. grossularia and Pyrocystites sp. New data on the morphology of Paleosphaeronites, i.e., gonoduct canal and palatal plates in peristome, are presented. A fixo-sessile mode of life of Paleosphaeronites is documented by the specimens attached to trilobite exoskeletons. The described cystoid fauna is one of the earliest yet known, and indicates remarkable echinoderm diversity and favourable marine environment in the late Tremadocian in the European part of peri-Gondwana region.

References

Barrande, J. 1887. Systeme silurien du centre de la Boheme. 7. Classe des Echinodermes, Ordre des Cystidées. XVII + 233 pp., 39 pls. Leipzig, Praha.

Bockelie, J.F. 1981. Functional morphology and evolution of the cystoid Echinosphaerites. Lethaia 14(3), 189–202.View article

Bockelie, J.F. 1984. The Diploporita of the Oslo region, Norway. Palaeontology 27(1), 1–68.

Chauvel, J. 1966. Echinodermes de l’Ordovicien du Maroc. Cahiers de Paléontologie, Éditions du Centre National de la Recherche Scientifique, 1–120.

Chauvel, J. 1978. Compléments sur les Echinoderms du Paléozoique marocain (Diploporites, Eocrinoides, Edrioasteroides). Notes du Service géologique du Maroc 39(272), 27–78.

Gutiérrez-Marco, J.C., Chauvel, J. & Melénez, B. 1996. Neuvos equidermos (cystideos y blastozoos) del Ordovícico de la Cordillera Ibérica (NE Espana). Revista Espanola de Paleontología 11(1), 100–119.

Havlíček, V. 1977. Brachiopods of the order Orthida in Czechoslovakia. Rozpravy Ústředního ústavu geologického 44, 1–327.

Havlíček, V. 1982. Lingulacea, Paterinacea, and Siphonotretacea (Brachiopoda) in the Lower Ordovician sequence of Bohemia. Sborník geologických věd, Paleontologie 25, 9–82.

Havlíček, V. & Vaněk, J. 1966. The Biostratigraphy of the Ordovician of Bohemia. Sborník geologických věd, Paleontologie 8, 7–69.

Kettner, R. 1921. O transgresích a regresích spodnosilurského moře v Čechách. Rozpravy České akademie pro vědy, slovesnost a umění, Třída II 30(43), 1–7.

Klouček, C. 1914. Nález trilobitů v d1α Věstník Královské české společnosti nauk, Třída II 14, 1–5.

Klouček, C. 1917. Novinky z krušnohorských vrstev d1α. Část II. Rozpravy České akademie pro vědy, slovesnost a umění, Třída II 26(10), 1–7.

Klouček, C. 1918. Novinky z krušnohorských vrstev d1α. Část IV. Rozpravy České akademie pro vědy, slovesnost a umění, Třída II 28(38), 1–6.

Lipold, M.V. 1863. Die Eisensteinlager der Silurischen Grauwackenformation in Böhmen. Jahrbuch der Geologischen Reichsanstalt 13, 3.

Mergl, M. 1984. Fauna of the Upper Tremadocian of central Bohemia. Sborník geologických věd, Paleontologie 26, 9–46.

Mergl, M. 1986. The Lower Ordovician (Tremadoc-Arenig) Leptembolon Community in the Komárov area (SW part of the Prague Basin; Bohemia). Folia Musei rerum naturalium Bohemiae occidentalis, Geologica 24, 1–34.

Mergl, M. 1994. Trilobite fauna from the Třenice Formation (Tremadoc) in Central Bohemia. Folia Musei rerum naturalium Bohemiae occidentalis, Geologica 39, 1–31.

Mergl, M. 2002. Linguliformean and craniiformean brachiopods of the Ordovician (Třenice to Dobrotivá Formations) of the Barrandian, Bohemia. Acta Musei nationalis Pragae, series B – historia naturalis 58(1–2), 1–82.

Paul, C.R.C. 1968. Macrocystella Callaway, the earliest glyptocystitid cystoid. Palaeontology 11(4), 580–600.

Paul, C.R.C. 1972. Morphology and function of exothecal pore-structures in cystoids. Palaeontology 15(1), 1–28.

Paul, C.R.C. 1973. British Ordovician cystoids. Monographs of the Palaeontographical Society 1, 1–64.

Paul, C.R.C. & Bockelie, J.F. 1983. Evolution and functional morphology of the cystoid Sphaeronites in Britain and Scandinavia. Palaeontology 26(4), 687–734.

Prokop, R. 1964. Sphaeronitoidea Neumayr of the Lower Paleozoic of Bohemia. Sborník geologických věd, Paleontologie 3, 7–37.

Prokop, R.J. (= Prokop, R.) & Petr, V. 1999. Echinoderms in the Bohemian Ordovician. Journal of the Czech Geological Society 44(1–2), 63–68.

Regnéll, G. 1945. Non-crinoid Pelmatozoa from the Paleozoic of Sweden. A taxonomic study. Meddelanden fran Lunds geologisk-mineralogiska Institution 108, 1–255.

Růžička, R. 1927. Fauna vrstev Eulomových rudního ložiska u Holoubkova (V Ouzkém). Část II. Rozpravy České akademie pro vědy, slovesnost a umění, Třída II 36(60), 1–21.

Sdzuy, K. 1955. Cystoideen aus den Leimitz Schiefer (Tremadoc). Senckenbergiana lethaea 35(5–6), 269–278.

Sdzuy, K., Hammann, W. & Villas, E. 2001. The Upper Tremadoc fauna from Vogtendorf and the Bavarian Ordovician of the Frankenwald (Germany). Senckenbergiana lethaea 81(1), 207–261.View article

Vaněk, J. 1965. Die Trilobiten des mittelböhmischen Tremadoc. Senckenbergiana lethaea 46(4–6), 263–308.