Specimens of four species Bivalvia not previously recorded from Iraq were discovered. These are Didimacar tenebrica, Aspidopholas obtecta, Neotrapezium sublaevigatum, and Barbatia trapezina which belong to the Noetiidae, Pholadidae, Trapezidae Arcidae families, respectively. All specimens collected alive intertidal zone northwest Persian-Arabian Gulf, Iraq, in Fao region. Although these widespr...

Lichens can survive and cope with unsufficient water supply resulting in low intrathalline relative content. Under such conditions, photosynthesis is negatively affected by different degree of dehydration. In our study, fully hydrated samples Xanthoria elegans, Umbilicaria decussata Usnea aurantiaco-atra were light-acclimated during following desiccation from a to dry state, steady-state chloro...

in present study, diversity and relative abundance of calcareous nannofossils of the boundary between abtalkh and neyzar formations in dobaradar, kalat and chahchaheh sections were studied. taxonomical studies of calcareous nannofossils in the studied areas led to identification of 24 species in dobaradar, 27 species in kalat and 32 species in chahchaheh sections. based on identified nannofossi...