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Found 16 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
  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. a slight caveat: the piece is from 2005 supplementary(and included): reasonably large character/taxon matrix Paleobiology, 31(3), 2005, pp. 400–423 Integrating ichnofossil and body fossil records to estimate locomotor posture and spatiotemporal distribution of early sauropod dinosaurs: a stratocladistic approach Jeffrey A. Wilson wilsondinosaurop{ichnolstratocladisphenet+.pdf
  4. link Reassessment of a juvenile Daspletosaurus from the Late Cretaceous of Alberta, Canada with implications for the identifcation of immature tyrannosaurids Jared T.Voris, Darla K. Zelenitsky, François Therrien & Philip J. Currie NATURE Scientific Reports | (2019) 9:17801 | https://doi.org/10.1038/s41598-019-53591-7
  5. JOP New small-bodied ornithopods (Dinosauria, Neornithischia) from the Early Cretaceous Wonthaggi Formation (Strzelecki Group) of the Australian-Antarctic rift system, with revision of Qantassaurus intrepidus Rich and Vickers-Rich, 1999 Matthew C. Herne, Jay P. Nair,Alistair R. Evans ; Alan M. Tait Journal of Paleontology (2019) 93 (3): 543–584. NB:5,7 MB NB extra: this links to the page,but,hey...
  6. An unusual new sauropod dinosaur from the Late Cretaceous of Mongolia Alexander O. Averianov & Alexey V. Lopatin https://doi.org/10.1080/14772019.2020.1716402 4.1 MB JSYS Journal of Systematic Paleontology/2020(not assigned to an issue yet)
  7. 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
  8. Many FFM's know of Niles Eldredge by way of the recently erected genus of Eldregeops and particularly Eldregeops rana. (Penn Dixie site and others.) Eldrege studied the then Phacops rana. LINK below. The book's subtitle is “ THE GREAT DEBATE AT THE HIGH TABLE OF EVOLUTIONARY THEORY”. I didn't know of “THE GREAT DEBATE' and am taking the account as the history and “state of the science” of evolutionary theory. Published in 1995, there is apparently much subsequent development of the theory and science involved. Cheers , G Systematics and evolution of Phacops rana (G
  9. The Amateur Paleontologist

    Paravian cladistics

    Hey everyone, I recently got back to my project on theropod evolution. Just to know, between the family Dromaeosauridae and the stem deinonychosaurian Caihong juji, which one is more closely related (cladistically) to Avialae? Thanks in advance. -Christian
  10. The Amateur Paleontologist

    Entire theropod cladogram

    Hey everyone Would anyone here know of the most recent and up-to-date cladogram for the entire Theropoda? In what paper does it appear in? Thanks for the help. -Christian
  11. doushantuo

    cetacean phylogeny

    Jmartin
  12. here What NOT to expect: it's not a "pictorial atlas of...",far from it. Expect character matrices,cladograms. Any part dealing with ptychopariids might have been published already ,BTW
  13. Is it possible that not all the creatures we call fish are actually fish?
  14. doushantuo

    smell you later

    2011_ZelenitskyRSL+aves{cladisticstheropod_olfaction.pdf Read this one. I found it informative*,and the methodology is sound. The proxy for the "sense of smell" is clearly explained Now I'm interested in the precise way smell is used by predators in general.. *in particular the short remark about sphenethmoid preservation
  15. doushantuo

    echinoderm or something else?

    Around 1967 Jefferies launched his preliminary ideas on "calcichordates". Many echinoderm specialists are not convinced by his ideas. But: his interpretation of functional morphology makes sense,and his plate nomenclature has been taken onboard by at least some non-adherents of his theory. Although NOT commonly found,in some parts they can be a significant part of the paleofauna. Time to meet a fascinating group of animals! NB:LARGE download,and validity of the link expires soon http://rstb.royalsocietypublishing.org/content/royptb/282/990/205.full.pdf
  16. doushantuo

    Tyrannosaurid cladistics

    reasonably new,don't know if it's been posted yet http://www.pnas.org/content/113/13/3447.full.pdf
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