Cheilostome Bryozoa of late Eocene Age from Eua, Tonga
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A.H. Cheetham
Publications and source records attributed to A.H. Cheetham.
Rocks of eocene age on fippennies ledge, Gulf of Maine
In August 1965, a scallop dredge from R/V Albatross brought up many pieces of fossiliferous opaline chert or porcellanite of Eocene age from Fippennies Ledge , a bank 70 m deep in the central Gulf of Maine . Their presence in this area supports the idea that part of the Gulf is underlain by sedimentary rocks of Tertiary age . Occurrence in the porcellanite of two identifiable species of Bryozoa (ascophoran Cheilostomata), Kleidionella lobata Canu and Bassler and "Ocheto-sella" robusta Canu and Bassler, suggests (1) correlation with the Castle Hayne Limestone of Claiborne to Jackson age ; (2) a temperate zone, distinctly American biogeographic provenance; and (3) accumulation in quiet water.
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