Here is a species of bryozoan that appears to align with the description Nancy gives in her thread regarding the "5 sided fence" and the "yard" which would be the "heavy calcification between zooids", it's size is also such that it could easily reside in a lesion, approx 10 thousands of an inch or about the size of the head of a sewing needle, give or take.
Quote:
Species Description:
S. cornuta forms encrusting colonies that are pink to salmon in color. Zooids are oval to hexagonal and measure approximately 0.35 X 0.25 mm in size. Heavy calcification between zooids obscures distinct boundaries between individuals. The frontal surface is perforated by many tiny pores that become more irregular in shape as the colony ages due to secondary calcification. The orifice is semicircular with 2 cardelles and a proximal V-shaped sinus. Avicularia are elliptical and may be single or paired. They are raised on processes inferior and lateral to the orifice, and generally have their mandibles pointed upward at a 45-degree angle.
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At the site I linked to below it also speaks of the color of the embryos being orange-red to cherry red, just as Nancy described seeing orange dots or something to that effect in her thread.
Schizo_cornut