The burrows are covered by thin shaly laminae and form distinct ridges.
They are characterized by robust radial ridges, alternated with thin laminae of bone.
To keep such arrangement, physical support cost of laminae can also be important.
Coarse-grained laminae are mostly thicker than the fine-grained laminae.
Occasionally arbors were seen in the two deeper minor laminae, but these were not used for the analysis.
However, this mechanism would require cell loss restricted to the three ipsilateral laminae, along a narrow retinotopic sector in the lateral geniculate body.
The feeding activities as determined with bait laminae did not correlate with the decomposition activities determined with litterbags.
Others are cleaved along the plane of the leaf laminae.
