Bitner, M. A.; Melnik, V. P.; Zezina, O. N. (2013). New paedomorphic brachiopods from the abyssal zone of the north-eastern Pacific Ocean. Zootaxa. 3613(3): 281-288.
New paedomorphic brachiopods from the abyssal zone of the north-eastern Pacific Ocean
Zootaxa
3613(3): 281-288
Publication
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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).
Pacific, North East (Warm + cold temperate (boreal))
