Yenisolöz ve Fındıcak (Gemlik, Türkiye) Erken - Orta Eosen Yaşlı Nummulites’lerin Biyometrisi ve Filojenisi.

In this study, an approach to the phylogeny of Nummulites was made by performing biometric analysis on measurements of Nummulites forms collected from sedimentary environments of Cuisian - early Lutetian (early - middle Eocene) age outcropping in the Fındıcak and Yenisölöz localities (northwestern Anatolia) in northwestern Turkey. The Cuisian (early Eocene) aged Fındıcak Formation, characterized by carbonate-dominated conglomerate, sandstone, siltstone, limestone, and marl sequences, the early Lutetian (middle Eocene) aged Dürdane Formation, and the Priabonian (late Eocene) aged Soğucak Formation were examined for macro- and microspheric forms of Nummulites individuals. The biometric analysis of the macro- and microspheric forms of the collected Nummulites individuals with radial-granular and radial-white spotted characteristics identified the species Nummulites burdigalensis de la Harpe (Cuisian) and Nummulites uranensis de la Harpe (early Lutetian). A table was created containing the breakdown of the data for the two localities based on biometric measurements. As a result of the overlapping distributions of the two species, some clues were obtained about the genus characteristics of Nummulites, their developmental stages starting from the initial locus, and the changes they underwent until becoming adult individuals. Considering these changes, the phylogenetic development of the Nummulites from the study area, represented within the underlined species, was revealed as the lineage Nummulites burdigalensis → uranensis. [ABSTRACT FROM AUTHOR]