| Thus, any taphonomic bias that affects graptolite preservation in the lower Hirnantian applies to all study areas being considered here. |
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| It correlates well with the occurrence of widespread graptolite, conodont, and trilobite species. |
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| The Estonian graptolite argillite, Tremadoc in age, is distributed in northern Estonia and on Vormsi and Hiiumaa islands. |
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| Late Aeronian graptolite sedgwickii Event, associated carbon isotope excursion and facies changes in the Prague Synform. |
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| For this purpose the FADs of five graptolite biozonal species and nine ostracode indices in the Latvian sections are shown according to data from Gailite et al. |
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| Graptolite argillite is a kind of black shale of sapropelic origin, which is characterized by high concentrations of a number of trace elements, including metals. |
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