Eptingiacea and Saturnaliacea (Radiolaria) from the middle Carnian of Turkey and some late Ladinian to early Norian samples from Oman and Alaska

Abstract

This article is a taxonomic study of the radiolarian species of the superfamilies Eptingiacea and Saturnaliacea occurring in the middle Carnian fauna from the Köseyahya section, near the town of Elbistan, southeastern Turkey. This fauna is characteristic of the Tetraporobrachia haeckeli Radiolarian Zone as defined in Austria and later found also in Turkey and Oman. It comes from an 8 m thick succession of clayey/cherty limestones from the lower part of the section. In addition, a few species from the late Ladinian and Carnian from Oman and the early Norian from Alaska have also been included in this study, in order to improve some generic diagnoses and to show the diversity and evolutionary trends of some genera. 32 radiolarian species of which 22 are new are described and illustrated, and assigned to 16 genera of which three are new (Capnuchospyris, Veleptingium, and Triassolaguncula). The diagnoses of some species, genera, subfamilies and families have been revised, and the family Eptingiidae has been raised to the rank of superfamily.

Early-middle Carnian radiolarian cherts within the Eymir Unit, Central Turkey: Constraints for the age of the Palaeotethyan Karakaya Complex

“…6). Recent studies carried out on the radiolarian assemblages in SE Turkey (Tekin and Bedi, 2007a,b;Dumitrica et al, 2010) pointed out that these taxa are not present in the upper Middle Carnian strata.…”

Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T/J boundary and sedimentary evolution of the southern margin of the northern Neotethys

“…The radiolarian assemblages from this section are well-correlative to the circum-Pacific and Tethyan radiolarian assemblages. The radiolarian zonations by Carter (1993, 2010 were applied to this study for the Rhaetian to Pliensbachian time interval.…”

Middle-Late Triassic radiolarian cherts from the Arkotdağ mélange in northern Turkey: implications for the life span of the northern Neotethyan branch

“…In the Pelitören section, the sample (12-TC-303A) taken from the basal part of the section yielded Spongotortilispinus tortilis ( Figure 6), some of them (P. nazarovi, Nodotetrasphaera cive and Annulotri-assocampe sulovensis) disappear close to the end of middle Carnian based on the recent studies in SE Turkey (Dumitrica, Tekin, & Bedi, 2010, 2013a, 2013bTekin & Bedi, 2007a. Three taxa (Canoptum cucurbita, C. inornatum and C. levis) are crucial to determine the upper limit of the age of the sample ( Figure 6).…”