NEW LATE CRETACEOUS LOBSTERS FROM THE KYZYLKUM DESERT OF UZBEKISTAN

Abstract

Description of two new species of macruran decapod crustaceans, Hoploparia uzbekensis and Linuparus dzheirantuiensis, from Late Cretaceous rocks in the Kyzylkum Desert, Uzbekistan, represents the first published record of decapods from that country. Hoploparia is considered to be an intact, integrated genus. Specimens of Hoploparia uzbekensis and Linuparus dzheirantuiensis collected from the Aitym and Bissekty formations, respectively, are preserved as altered cuticular material in a sandy matrix. Specimens of Hoploparia and Linuparus collected from the Uchkuduk and Dzheirantui formations, respectively, are preserved as ironstone replacements, an unusual preservation style for decapods. The cephalothorax on the specimen of Linuparus from the Dzheirantui Formation has been partially broken in a manner suggestive of predation. The lateral thoracic flanks of the holotype of Linuparus dzheirantuiensis bear a raised, ridged area suggestive of a stridulating structure. These genera, although cosmopolitan in the Cretaceous fossil record, have not been recognized previously in central Asia.