Photo from Scientific Research

Tangential longitudinal surface of sectioned and polished counterpart (Figure 4A) showing petiolar density and disposition (white arrows) along a 36 cm interval. Here, petioles are either partially mudcast or without mud-fill and outlined in, or identified by, a calcite envelope in response to decay and cation interaction after burial. Red arrow points toward apex. Scale in cm/mm. NBM 22403/3.

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