Beltanelliformis brunsaeMennerinKeller, Menner, Stepanov & Chumakov, 1974: an Ediacaran fossil from Neoproterozoic of Dobrogea (Romania)

Abstract

Ediacaran fossils are now largely known in different parts of the world. However, some countries are poorly documented on these remains. Thus, rare fossils from the Neoproterozoic Histria Formation of central Dobrogea (Romania) have been reported. Two specimens with discoid imprints are described here in detail and assigned to the typical Ediacaran species Beltanelliformis brunsae Menner in Keller, Menner, Stepanov & Chumakov, 1974. This palaeontological development confirms both the large geographical distribution of this species and the Ediacaran age of the Histria Formation.

Simple Structures and Complex Stories: Potential Microbially Induced Sedimentary Structures in the Ediacaran Serra De Santa Helena Formation, Bambuí Group, Eastern Brazil

“…6, 7) are preserved exclusively in carbonate and marl facies. Although these discs are superficially similar in size, shape, and relief to Ediacaran macrofossils such as Beltanelliformis (Saint Martin and Saint Martin 2018), Nemiana (Ivantsov et al 2014), and Nimbia (Néraudeau et al 2018), they are more likely to be early diagenetic concretions resulting from differential cementation (Schwid et al 2021). Unlike Beltanelliformis and Nemiana , Type 1 discoidal structures are preserved as positive epirelief features, and do not preserve concentric folds or wrinkles that could indicate the presence of an organic wall (Ivantsov et al 2014).…”