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Swiss Journal of Palaeontology
Fig. 3 | Swiss Journal of Palaeontology

Fig. 3

From: A noteworthy accumulation of disparid crinoids from the type Cincinnatian (Upper Ordovician) of southwestern Ohio, USA: implications for the palaeoecology and taphonomy of crinoid “logjam” assemblages

Fig. 3

Example of parallel, slightly arcuate tool marks produced by the dragging of Ectenocrinus simplex nodals perpendicular to the long axis of the pluricolumnal. This specimen, which was recovered from the same locality as the “logjam” in Fig. 2, illustrates that elongate crinoid remains can be oriented with a long axis perpendicular to current direction, as has been suggested for certain “logjams” in the type Cincinnatian. Scale bar = 10 mm

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