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Hyoliths are usually preserved as isolated skeletal elements consisting of conch, operculum, and helens. The occurrence of a conch associated with an operculum is ordinarily exceptional, and the co-occurrence of helens with other skeletal parts is a great rarity. The extraordinary finds of hyolithid conchs associated with opercula in situ are relatively abundant in the Cambrian and Ordovician clastic...
The stratigraphical distribution of all the fossil taxa known from the Cambrian Příbram-Jince Basin of the Barrandian area are shown in seven tables. Crustaceans, trace fossils, macroscopical algae, and microfossil taxa have been established in the Lower Cambrian Paseky Shale Member (Holšiny-Hořice Formation). Ranges of molluscs, brachiopods, echinoderms, miomerid and polymerid trilobites, crustaceans,...
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