Swiss Journal of Geosciences

Table 1 Measurements of internal width and external width of the trackway

From: A giant limulid trackway (Kouphichnium lithographicum) from the lithographic limestones of Cerin (Late Kimmeridgian, France): ethological and environmental implications

	Internal width (mm)	External width (mm)
R1–L1	175	257
R2–L2	176	260
R3–L3	178	258
R4–L4	182	260
R5–L5	179	258
R6–L6	177	260
R7–L7	?	258
R8–L8	178	257
R9–L9	180	259
R10–L10	179	260
Mean	178.2	258.7

? data non available

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