Talk:Isomer (Proarticulata)

I can not find any documents or reports that say that Spriggina, Marywadea and Praecambridium are members of Yorgiidae: in fact the Wikipedia article for Praecambridium says it's a member of Dickinsoniidae, and other articles on the internet suggest that it is a vendiamorph. Furthermore, Windermeria is a dickinsoniid (Narbonne, Guy M. 1994: New Ediacaran fossils from the MacKenzie Mountains, northwestern Canada. Journal of Paleontology 68: 411-416.)--Mr Fink (talk) 04:28, 19 February 2009 (UTC)

Answer

This article is not about members Dickinsoniidae. It about Isomer is a term that has been proposed by Andrey Yu. Ivantsov for element of transverse body articulation of the animals from the Phylum Proarticulata. Phylum Proarticulata has been proposed by Mikhail Fedonkin in 1985 with it members: Class Vendiamorpha Fedonkin, 1985 and Dipleurazoa Harrington et Moore, 1955. At present, Andrey Ivantsov officially develops and fundamentally proves idea of the phylum Proarticulata. And nobody has the right to sail in his research or edit the Proarticulata idea before the research will be finished and published completely. Hi the best and the sole expert on the Phylum Proarticulata. Andrey studies of the Proarticulata 15 years! (+ Mikhail Fedonkin from end of '70s to '90s of the last century).

Different researchers consider the Dickinsonia (and family Dickinsoniidae as Dickinsonia is type genus for this class) as members a worm, Vendobionta, fungal/lichen, cnidarias...

Ivantsov not considers Windermeria as member of the family Dickinsoniidae in phylum Proarticulata. Therefore it is inappropriate to mention about Windermeria in this article. And it here pertinently to refer to opinion A. Ivantsov only. Generalizations are is inadmissible.

And Narbonne consider Windermeria as primitive bilaterian family Dickinsoniidae but not as member Proarticulata. (see: Mikhail A. Fedonkin, James G. Gehling, Kathleen Grey, Guy M. Narbonne, and Patricia Vickers-Rich foreword by Arthur C. Clarke. (2008) "The Rise of Animals. Evolution and Diversification of the Kingdom Animalia")

“...Spriggina, Marywadea and Praecambridium are members of Yorgiidae.” I did not report it. See my words: “Class Cephalozoa demonstrate incomplete segmentation, their anterior zone free of isomers (this group includes Yorgia, Andiva, Archaeaspinus, Ivovicia, Cyanorus, Spriggina, Marywadea, and Praecambridium).[1][4][7][5] Some cephalozoans from Family Yorgiidae demonstrate obvious asymmetry of left and right parts of the body.”

Why you deleted Spriggina, Marywadea and Praecambridium from this article? “I can not find any documents or reports” ????? '''SEE ref. 7''' - Ivantsov, A.Y. (2004) "Vendian Animals in the Phylum Proarticulata". The Rise and Fall of the Vendian Biota. IGSP Project 493. Abstracts. Prato, Italy, p. 52. + Andrey Ivantsov reports on other conferences.

“in fact the Wikipedia article for Praecambridium says it's a member of Dickinsoniidae, and other articles on the internet suggest that it is a vendiamorph.” It is inadmissible to refer to article from Wikipedia and other “pedias” as a trustworthy source! Only to official scientific articles and reports!!!

“Praecambridium says it's a member of Dickinsoniidae” – nobody ever reported it in scientific publications.

“Praecambridium says it's a member of Vendiamorpha” and Arthropoda, Sprigginida, worm, Onychophora, Vendobionts. So many scientists, so many ideas (but many ideas are dead or nonsense).

Aleksey (Alnagov (talk) 22:56, 20 February 2009 (UTC))

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