Piscatus ostrearum in insula Cramond iam anno 1806 deletus est: Oysters beds on the coast, and about the islands of Cramond and Inchmickery, are almost destroyed from over fishing (s.v. "Cramond" apud Google Books)
Aenigma ostrei P. Louvre inv. 7733 verso: P. J. Parsons, "The Oyster" in Zeitschrift für Papyrologie und Epigraphik vol. 24 (1977) pp. 1-12 JSTOR, cf. Ostrearium genus