This month’s Thorniest-Question-That-Is-of-Interest-Almost-Exclusively-to-Specialists is the determination of the type of the sub-genus Pseudamussium. Read about it, if you will, in F.K. North’s provocative 1951 study “On the Type of Pseudamussium and Other Notes on Pectinid Nomenclature“, a fragment of which is reproduced in the image shown here. (Thanks to investigator Delia Rehobeth for bringing it […]