... the abundance and morphological diversity of bioerosional structures in lacustrine chitinous microfossils from temperate glacial lakes. Our material originated from late Pleistocene and Holocene sediments of three glacial lakes situated in the Bohemian Forest, Czech Republic. We focused on two microfossil size...

... intensities and higher diversity of bioerosional traces in the shallow epicontinental seas of the Late Ordovician. The discovery of Petroxestes in the Sandbian of Estonia supports the idea that there was an earliest Late Ordovician peak in the diversification of borings in Baltica. It is possible...

... categories of skeleton damages: fragmentation (F), abrasion (A), bioerosion (B) and encrustation (E). Fragmentation and abrasion were defined as mechanical or physical processes, whereas bioerosional features and encrustation were considered as the result of identified biological processes. Considering...

..., Asteroidea) and associated ichnofossils from Liessel, province of Noord-Brabant, the Netherlands : Netherlands Journal of Geosciences , v. 88 , p. 127 – 131 . Jagt J.W.M. , Neumann C. , and Donovan S.K. , 2009 , Petroxestes altera , a new bioerosional trace fossil from...

... bioerosional ichnofossils from Cambrian deposits of Baltica have not been previously described (Raukas & Teedumäe, 1997 ). Kopli quarry is situated in northern Tallinn. In the deepest part of the quarry, violet-grey clays of the Kestla Member (Lontova Formation) are exposed...

... as well as of changes of these parameters over time (e.g., Steller and Foster 1995 ; Basso 1998 ; Bassi et al. 2012 ; Aguirre et al. in press ). Micro-computed tomography (Micro-CT) has been established as a non-destructive method to analyze bioerosional features, allowing a detailed understanding...

.... These traces consist of short and thick voids connected by threadlike tunnels by feeding zooids of colonial ctenostome bryozoans. These traces occur in large numbers on the attached oyster shells. Other small-sized bioerosional traces comprise diminutive, cylindrical, more-or-less branching borings...

... and bioerosional structures visible were selected for detailed study using SEM, for which a LEO 1455-VP scanning electron microscope at the NHMUK was employed. This instrument has the capability of accommodating large, uncoated specimens, operating at low vacuum and using back-scattered electrons (BSE) for image...

... the secondary porosity of corals and mollusks are frequent ( Fig. 7F ). In addition, geopetal infillings within the bioerosional structures ( Figs. 6F , 7E ) and other voids are widespread and often indicate reworking of clasts. Strong reworking of these deposits is also indicated by the presence in some...

... borings to recent bioerosional structures (woodworm borings). The same approach can be found in folio 9v, where the Inorganic theory is confuted: “[the Inorganic theory is not true] because there remains the trace of the [animal's] movements on the shell which [it] consumed in the same manner...