tag:blogger.com,1999:blog-3248412803814730250.post3130607093830427122..comments2024-03-17T01:48:59.504-07:00Comments on The Theropod Database Blog: Elmisaurus elegans no more? LeptorhynchosMickey Mortimerhttp://www.blogger.com/profile/08831823442911513851noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-3248412803814730250.post-33886854337407698572013-10-24T11:16:54.644-07:002013-10-24T11:16:54.644-07:00Hi Mickey,
Longrich et. al. (2013) have published...Hi Mickey,<br /><br />Longrich et. al. (2013) have published a corrigendum acknowledging that they forgot to designate a type species for Leptorhynchos. They therefore designate L. gaddisi as the type species of Leptorhynchos, meaning that "Ornithomimus" elegans becomes a referred species. Obviously, Longrich and his colleagues seem to have been aware of the fact that no jaw remains have been found with ROM 781, so they referred the mandible RTMP 2001.12.12 to elegans because its proportions were consistent with ROM 781 and it was more similar to Leptorhynchos gaddisi than to either of the nominal Caenagnathus species.<br /><br />If a complete skeleton confirms that elegans is congeneric with Leptorhynchos, it would show that Leptorhynchos was a wide-ranging genus like Stegoceras (which has northern S. validum and southernmost S. novomexicanum). <br /><br />Longrich, N. R.; Barnes, K.; Clark, S.; Millar, L. (2013). Correction to “Caenagnathidae from the Upper Campanian Aguja Formation of West Texas, and a Revision of the Caenagnathinae”. Bulletin of the Peabody Museum of Natural History 54 (2): 263-264. doi: http://dx.doi.org/10.3374/014.054.0204Davidowhttps://www.blogger.com/profile/06099864739987549261noreply@blogger.comtag:blogger.com,1999:blog-3248412803814730250.post-18057665825634666522013-07-18T14:47:43.165-07:002013-07-18T14:47:43.165-07:00Thank Mickey!!Thank Mickey!!Pixagonohttps://www.blogger.com/profile/18195814903551576172noreply@blogger.comtag:blogger.com,1999:blog-3248412803814730250.post-12863290519617585752013-07-17T21:36:36.325-07:002013-07-17T21:36:36.325-07:00Yeah, I have Ezcurra (2013) on Teyuwasu. As you s...Yeah, I have Ezcurra (2013) on Teyuwasu. As you say, the robusticity is unlike known basal dinosauromorphs, but he does say it "can be assigned confidently to the clade that includes silesaurids and dinosaurs based on the presence of a femur with a longitudinal proximal groove, and a reduced posterior tuberosity on the femoral head, and the tibia with a posterolateral process exceeding laterally the facet for the reception of the ascending process of the astragalus and with a longitudinal lateral groove separating the posterolateral process and the facet for the reception of the ascending process of the astragalus". These vastly outweigh robusticity when using parsimony, so assuming Ezcurra's observations are accurate, I provisionally agree Teyuwasu is a dinosauriform.<br /><br />I have SMNS 51958 in Saurischia on my site, though adding it to a matrix with many basal saurischians and femoral characters would be interesting.Mickey Mortimerhttps://www.blogger.com/profile/08831823442911513851noreply@blogger.comtag:blogger.com,1999:blog-3248412803814730250.post-41126410346650654442013-07-17T19:42:09.484-07:002013-07-17T19:42:09.484-07:00Hi Mickey
I found pictures of the bones of Teyuwa...Hi Mickey<br /><br />I found pictures of the bones of Teyuwasu and do not resemble anything like a dinsoauri, as it is extremely robust. Do not know if the article interests you Huene or you got it.<br /><br />On the other hand there is a piece if it is Theropod o archosauriform, is a femur that Galton shows in 1985. belongs to the Norian of Germany (SMNS 51958)<br /><br />Could give us some of your assessments of both please?Pixagonohttps://www.blogger.com/profile/18195814903551576172noreply@blogger.comtag:blogger.com,1999:blog-3248412803814730250.post-43615250303813867622013-07-17T19:40:25.800-07:002013-07-17T19:40:25.800-07:00This comment has been removed by the author.Pixagonohttps://www.blogger.com/profile/18195814903551576172noreply@blogger.comtag:blogger.com,1999:blog-3248412803814730250.post-35178265852417382572013-04-25T17:17:30.471-07:002013-04-25T17:17:30.471-07:00Back in 1989, Sereno proposed segnosaurs were sist...Back in 1989, Sereno proposed segnosaurs were sister to Prosauropoda within Sauropodomorpha.<br /><br />Sereno, 1989. Prosauropod monophyly and basal sauropodomorph phylogeny. JVP. 9(3), 38A.Mickey Mortimerhttps://www.blogger.com/profile/08831823442911513851noreply@blogger.comtag:blogger.com,1999:blog-3248412803814730250.post-71193362067448260312013-04-25T17:02:41.134-07:002013-04-25T17:02:41.134-07:00"plateosaurs like Sereno thought"
He di..."plateosaurs like Sereno thought"<br /><br />He did? You didn't mean to write "Paul", did you?Mike Keeseyhttps://www.blogger.com/profile/00147156174467903264noreply@blogger.com