Resumen de Quantitative Data on the Relationship between the Orbitoides Genus and its Environment
A special biometric study of the larger Orbitoides collected from various substrates (claystones to siltstones, limestones and sandstones) in the Hekimhan and Darende areas, NW and E Malatya, Turkey, indicate that particular external and internal features of the changed with time and environment, especially water depth. Size of the embryo, the number of auxiliary chambers, peri-embryonic chambers and the average thickness of the embryonic wall were greatest in the sandstone substrate (fore-reef to basin deposits) while thickness of the was least in such substrates.
