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Found 3 results

  1. When it comes to evolutionary lineages that tend to be represented by flow charts, would it be viable to also represent/reorganize them into hypothetical cladograms? Considering that flow charts continue to be used for certain lineages (i.e. Lamnidae), I am feeling the possibility that there might be something that makes the interpretation of such charts incompatible with cladograms. For example, below are evolutionary lineages for Isurus and Carcharodon per Heim (1996) and Canevet & Lebrun (2018) (left and right respectively) that I translated into possible cladograms. If this is a viable thing to do, I'm also curious about how anacladogenesis can be represented.
  2. Taxonomic debate over extinct lamniformes remains a big thing, but I've noticed that it seems like there hasn't been any studies that use modern phylogenetic techniques (i.e. maximum parsimony) to resolve issues with extinct taxa (i.e. Carcharodon, Isurus, Macrorhizodus, Otodus). Is there a reason for this absence, or perhaps I simply have not come across one that already exists? I suppose it's possible that dental characteristics alone as character codes for a phylogenetic matrix may not be viable...
  3. Bignon, A., Waisfeld, B.G., Vaccari, N.E., Chatterton, B.D.E. 2020 Reassessment of the Order Trinucleida (Trilobita). Journal of Systematic Palaeontology. (in press) 18 pp. 10.1080/14772019.2020.1720324 Now there are 14 trilobite orders for the experts to argue about: Agnostida SALTER 1864 Asaphida SALTER 1864 Aulacopleurida ADRAIN 2011 Corynexochida KOBAYASHI 1935 Eodiscida KOBAYASHI 1939 Harpetida WHITTINGTON 1959 Lichida MOORE 1959 Odontopleurida WHITTINGTON 1959 Olenida ADRAIN 2011 Phacopida SALTER 1864 Proetida FORTEY & OWENS 1975 Ptychopariida SWINNERTON 1915 Redlichiida RICHTER 1932 Trinucleida SWINNERTON 1915
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