The genus Lepidorbitoides: Evolution and stratigraphic significance in some Anatolian basins (Turkey)
Küçük Resim Yok
Tarih
1999
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Maison de Geologie
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Evolution of Lepidorbitoides in some flysch basins of Anatolia has been investigated considering the early ontogenesis in horizontal sections. Different developmental states of L. permbergeri, L. campaniensis, L. bisambergensis, L. minor and L. socialis have been described and illustrated with their morphometric features based on the earliest chamber arrangement. A correlation scheme of phylogenetic developmental states of Lepidorbitoides to the planktonic foraminiferal zones is also proposed. Populations with highly asymmetric quadriserial nepionts identified stratigraphically below the symmetric ones in Early Maastrichtian are thought to deserve a new status and attributed to L. bisambergensis asymmetrica n. spp. Orbitoides in common association with Lepidorbitoides has also been studied for the evolution of embryo-related parameters such as embryo size (Li + Ii), number of epi-embryonic chambers (E) and other embryonal features to correlate the phylogenetic developmental state of both genera.
Açıklama
Anahtar Kelimeler
Campanian-Maastrichtian, Evolution, Lepidorbitoides, Nepionic arrangement, Turkey
Kaynak
Revue de Micropaleontologie
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
42
Sayı
2
