(1846): Memoire sur le terrain a Nummulites
(Epicretace) des Corbieres et de la Montagne Noire.
atacicus: This species was dominantly found in the lower to middle parts of the formation throughout the study area.
The presence of large nummulites
and lepidocyclinids represents that this microfacies took place in relatively deep water and was formed in the lower photic/oligophotic zone in the distal middle ramp [35,36,43,53,33,32, 30,50,56,11,48,9,10,57].
, Assilina and Discocyclina are mostly present in the open shoal to the offshore part of the carbonate platform.
striatus appear first in SBZ 18 and ranges to lower part of SBZ 19, whereas later it was also recorded from SBZ 17 of Turkey and Romania (Rusu et al., 2004; Ozcan et al., 2010).
4a).in this microfacies a subfacies has been identified, namely Nummulites
/Orbitolites bioclast pelloidal packstone.
mamillatus (FICHTEL and MOLL) Nummulites
atacicus LEYMERIE 1846
We can define an Acme zone equal to SB13 base on presence of index LBF fossils of nummulites
. Time of formation is from 47.47 to 45.35 Ma.
Other associated species include Discocyclina dispansa, and species of Austrotrillina, Nummulites
, Fabiania , Alveolina, Amphistegina, Asterigerina, Operculina, Smoutina, Assilina, Dictyoconus, Orbitolites, Elphidium and Planorbulina (Figs.
In the fossil record Alveolina is found in association with Nummulites
and Orbitolites in the Eocene Jdeir Formation of offshore Libya representing a back ramp environment (Anketell and Mirheel 2000).