Journal
PALEONTOLOGICAL JOURNAL
Volume 41, Issue 4, Pages 360-369Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0031030107040028
Keywords
bilateral organism; Vendian; White Sea region; Russia
Categories
Ask authors/readers for more resources
A fossil organism, Palaeophragmodictya Gehling et Rigby, 1996, previously classified within sponges, is found for the first time in the Vendian of the Arkhangelsk Region. Based on the new finds, Palaeophragmodictya is interpreted as an attachment disc of a problematic animal with combined coelenterate and sponge morphology. Typical and unique preservational forms from the same bedding plane are described. Three-dimensional fossils are preserved as flat impressions at random horizontal levels. Bilateral symmetry discovered in the ontogeny of Palaeophragmodictya spinosa sp. nov. supports the hypothesis of initial bilaterality of Cnidaria.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available