New records of Dasycladales (green algae) from the Aptian-Albian Langshan Formation of Tibet

Little is known about the microflora of the shallow-marine carbonates of the Aptian-Albian Langshan Formation of Tibet. From two sections, the species Similiclypeina langshanensis sp. nov., ­Morelletpora turgida (Radoičić, 1975 non 1965), Salpingoporella sp., Bakalovaella xizangensis (Mu, 1986) comb. nov., and Bakalovaella elitzae (Bakalova) are described. The Aptian and Albian age of the studied sections is evidenced by the occurrence of orbitolinid foraminifera. Like the non-orbitolinid benthic foraminifera, the Tibetan Lower Cretaceous Dasycladales also display poorly diversified assemblages compared to western and central Neotethys time-equivalent occurrences (Urgonian-type carbonates).