Averianov Alexander O, Martin Thomas, Evans Susan E, Bakirov Aizek A
Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034, Russia.
Naturwissenschaften. 2006 Jan;93(1):46-50. doi: 10.1007/s00114-005-0061-2. Epub 2005 Dec 13.
Although choristoderes have a good Lower Cretaceous record in Asia, they have never previously been recorded from Jurassic deposits. Here we describe fragmentary vertebral material referable to Choristodera indet. from the Middle Jurassic Balabansai Svita of the Fergana Valley, Kyrgyzstan. This provides a significant range extension for the group in Asia and shows that choristoderes already had a Pan-Laurasian distribution in the Jurassic.
尽管离龙类在亚洲下白垩统中有良好的化石记录,但此前从未在侏罗纪沉积中被发现过。在此,我们描述了来自吉尔吉斯斯坦费尔干纳谷地中侏罗统巴拉班赛组的离龙类未定种的破碎脊椎材料。这显著扩展了该类群在亚洲的分布范围,并表明离龙类在侏罗纪时期就已经具有泛劳亚大陆分布。