2019/75/1
ISSN : 2533-4050 (tisk), 2533-4069 (online)
Vedoucí redaktor : Jiří Kvaček
Vedoucí redaktor : Jiří Kvaček
Review of ascocerid cephalopods from the upper Silurian of the Prague Basin (Central Bohemia) – history of research and palaeobiogeographic relationships
Martina Aubrechtová
The order Ascocerida Kuhn, 1949 includes rare and morphologically unique early Palaeozoic cephalopods, in which periodic shell truncation occurred during ontogeny; mature shells subsequently became inflated, with thin sigmoidal septa and phragmocone chambers situated above the living chamber. The…
Llandovery microfossils and microfacies of the Hýskov section, Prague Basin
Petra Tonarová, Stanislava Vodrážková, Olle Hints, Peep Männik, Michal Kubajko, Jiří Frýda
The lower Silurian strata of the Prague Basin, as well as in many other regions, are primarily represented by black shales, with limited to no record of benthic life. In this paper, we describe an exceptional late Aeronian volcanic-carbonate succession from the Hýskov locality near Beroun, which…
Little known Homerian (lower Silurian) graptolites from Kosov quarry near Beroun, the Czech Republic
Petr Štorch, Štěpán Manda
The Homerian graptolite fauna of the upper Cyrtograptus lundgreni and lower Colonograptus ludensis-Colonograptus gerhardi biozones, recovered from densely sampled sections in Kosov quarry includes several poorly known species, which appear to be useful in high resolution correlation. Gothograptus…
Empty cephalopod conchs as substrates for gastropod eggs from the Hangenberg Black Shale (Late Devonian) of the Maïder Basin (Morocco)
Christian Klug, Alexander Pohle, Dieter Korn
In the latest Famennian, black shale deposition occurred in many regions, some suggested a marine transgression as the explanation while others saw a link with higher organic input from the land. In either case, the Hangenberg Black Shale was most likely deposited under low oxygen conditions, which…
Taxonomy and stratigraphic distribution of the ammonite Schloenbachia Neumayr, 1875 from the Bohemian Cretaceous Basin
Martin Košťák, Jan Sklenář, Martin Mazuch, Stanislav Čech
Only two specimens of the ammonite genus Schloenbachia have hitherto been recorded from the Bohemian Cretaceous Basin (BCB). While the first specimen was originally described by Dr. J. Soukup in the 1970s, the other one was discovered in an older collection of the Faculty of Science, Charles…
Conch structures, soft-tissue imprints and taphonomy of the Middle Ordovician cephalopod Tragoceras falcatum from Estonia
Alexander Pohle, Christian Klug, Ursula Toom, Björn Kröger
Tragoceras falcatum (Schlotheim, 1820) is a common, loosely coiled estonioceratid (Tarphycerida, Cephalopoda) occurring in the Kunda Regional Stage (early Darriwilian, Middle Ordovician) of Estonia. Although the species is quite wellknown, we document some features for the first time. For example,…
Trilobite assemblage of Calceola-bearing beds in Acanthopyge Limestone (Middle Devonian, Eifelian, Prague Basin, the Czech Republic)
Petr Budil, Michal Mergl
The trilobite assemblage of Calceola-bearing beds in the upper part of Acanthopyge Limestone (Choteč Formation, Eifelian) in the Koněprusy area, the Czech Republic, is described. Together with occurrence of Calceola, it indicates absence of significant palaeogeographic barriers restricting the…
Rhynchonelliform brachiopods and trilobites of the ‘upper dark interval’ in the Koněprusy area (Devonian, Eifelian, Kačák Event; the Czech Republic)
Michal Mergl, Petr Budil
The dark pelbiodetrital limestone beds of the ‘upper dark interval’ in the Koněprusy area, Central Bohemia, the Czech Republic, the assumed manifestation of the Kačák Event in this area, yielded a moderately diverse faunule of rhynchonelliform brachiopods and trilobites. In total, 15 species have…
‘Cenoceras islands’ in the Blue Lias Formation (Lower Jurassic) of West Somerset, UK: nautilid dominance and influence on benthic faunas
David H. Evans, Andy H. King
Substantial numbers of the nautilid Cenoceras occur in a stratigraphically limited horizon within the upper part of the Lower Jurassic (Sinemurian Stage) Blue Lias Formation at Watchet on the West Somerset Coast (United Kingdom). Individual nautilid conchs are associated with clusters of encrusting…
The bivalve Cuneamya from the Late Ordovician of Bohemia
Marika Polechová
The bivalve species Cuneamya catilloides from the Late Ordovician of Bohemia, previously assigned to the genus Grammysia, is revised. Cuneamya catilloides is an important element of the Modiolopsis Community Group in the Letná Formation. The genus Grammysia very probably does not occur in the…
Cambrian hyoliths of the Příbram-Jince Basin (Barrandian area, the Czech Republic): A review of recorded taxa
Oldřich Fatka, Martin Valent
Hyoliths recorded from the middle Cambrian Jince Formation of the Barrandian area in the Czech Republic are reviewed and listed, based on various published papers printed since 1854. Up to now, only five species of hyolithids and three species of orthothecids have been reported, classified within…