Bitner Maria Aleksandra, Melnik Vjacheslav P, Zezina Olga N
Institute of Paleobiology, Polish Academy of Sciences, 00-818 Warszawa, Poland; Email:
Yuzhmorgeologiya, Federal Scientific Centre, Russia, Gelendzhik 352 461; Email:
Zootaxa. 2013 Feb 11;3613:281-8. doi: 10.11646/zootaxa.3613.3.6.
New Recent very small but sexually mature brachiopods have been found at abyssal depths (4580-4850 m) in the Clarion- Clipperton Zone of the Pacific Ocean. They are characterized by simple (under-developed, juvenile) morphological features, which are interpreted here as paedomorphic, indicating the importance of heterochrony in the evolution of deep-sea brachiopods. We have described these brachiopods as representing two new genera and species, i.e. Oceanithyris juveniformis Bitner & Zezina (Family ?Dyscoliidae) and Simpliciforma profunda Bitner & Zezina (Superfamily Gwynioidea).
最近在太平洋克拉里昂-克利珀顿区的深海深度（4580 - 4850米）发现了非常小但已性成熟的腕足动物。它们具有简单（发育不全、幼态）的形态特征，在此被解释为幼态持续，这表明发育异时性在深海腕足动物进化中的重要性。我们已将这些腕足动物描述为代表两个新属和新物种，即幼形海洋孔贝（Oceanithyris juveniformis Bitner & Zezina，?盘口贝科）和深海简单贝（Simpliciforma profunda Bitner & Zezina，格温尼奥超科）。
