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Author Topic:   New Genus with two new species
New Cat's Eye
Inactive Member


Message 1 of 2 (736227)
09-05-2014 3:39 PM


Dendrogramma, New Genus, with Two New Non-Bilaterian Species from thje Marine Bathyal of Southeastern Australia (Animalia, Metazoa incertae sedis) - with Similarities to Some Medusoids from the Precambrian Ediacara
quote:
Abstract
A new genus, Dendrogramma, with two new species of multicellular, non-bilaterian, mesogleal animals with some bilateral aspects, D. enigmatica and D. discoides, are described from the south-east Australian bathyal (400 and 1000 metres depth). A new family, Dendrogrammatidae, is established for Dendrogramma. These mushroom-shaped organisms cannot be referred to either of the two phyla Ctenophora or Cnidaria at present, because they lack any specialised characters of these taxa. Resolving the phylogenetic position of Dendrogramma depends much on how the basal metazoan lineages (Ctenophora, Porifera, Placozoa, Cnidaria, and Bilateria) are related to each other, a question still under debate. At least Dendrogramma must have branched off before Bilateria and is possibly related to Ctenophora and/or Cnidaria. Dendrogramma, therefore, is referred to Metazoa incertae sedis. The specimens were fixed in neutral formaldehyde and stored in 80% ethanol and are not suitable for molecular analysis. We recommend, therefore, that attempts be made to secure new material for further study. Finally similarities between Dendrogramma and a group of Ediacaran (Vendian) medusoids are discussed.
Just FYI...
Edited by Adminnemooseus, : Took out extra line breaks.

Replies to this message:
 Message 2 by NoNukes, posted 09-05-2014 4:30 PM New Cat's Eye has not replied

  
NoNukes
Inactive Member


Message 2 of 2 (736231)
09-05-2014 4:30 PM
Reply to: Message 1 by New Cat's Eye
09-05-2014 3:39 PM


The aim of this paper is to present a group of non-bilaterian
metazoan organisms that cannot at present be placed in an
existing phylum. The two species described, D. enigmatica and D.
discoides (Figs 1—7) in new genus Dendrogramma of the new family
My knowledge of biology is below Creationist levels with regard to depth and accuracy. But if these organisms cannot be placed in any existing phylum, doesn't that suggest that they must be a whole new class and order?
Is the novelty here just remarkably understated, or is it that (most likely) the classification system is markedly different from what I had to memorize in 8th grade a few years back.

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