Influence of Microbial Biofilms on the Preservation of Primary Soft Tissue in Fossil and Extant Archosaurs
Figure 3
Examples of biofilm infiltration classes for extant archosaur bone.
A) Class 0: a pore on a fractured bone sample from A. mississippiensis showing no biofilm infilling; B) Class 1: a pore on a fractured bone sample from A. mississippiensis showing a biofilm coating the inner pore wall; C) Class 2: pores from a whole bone sample of A. mississippiensis showing a significant biofilm coating on the inner pore walls; D) Class 4: a pore from a fractured bone sample of G. gallus showing a complete infiltration or covering of the pore. All images shown at 300× magnification.