Environmental Engineering Reference
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FIGURE 8 Common trace fossils from the Lower Muschelkalk Group (Middle Triassic, Anisian)
of Thuringia, central Germany, in bedding plane expression (except B and D, which show vertical
sections). For localities and stratigraphical positions see Knaust (2007b) . Scale bar ΒΌ 1 cm.
(A) Openings of Lingulichnus verticalis in a grainy packstone (arenite) with incipient firmground
conditions. Skolithos Ichnofacies. Upper Terebratula Bed, Plaue quarry. (B) Steeply inclined and
dolomite-filled burrows ( Altichnus isp.) in a bioclastic and intraclastic (rudstone) limestone bed
(event bed). Skolithos Ichnofacies. f-3 Bed, Jena-Steudnitz quarry. (C) Omission surface on a mud-
stone (micrite) with abundant openings of steeply inclined and open R. jenense burrows. Glossifun-
gites Ichnofacies. Upper Wellenkalk, Rittersdorf quarry. (D) Mudstone (micrite) with a firmground
G
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