tag:blogger.com,1999:blog-3049195237412585561.post7677796198199989261..comments2023-11-07T12:07:59.585-08:00Comments on Pterosaurs to Birds: The Large Morphological GapUnknownnoreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3049195237412585561.post-59424472027031600942016-04-08T16:04:55.413-07:002016-04-08T16:04:55.413-07:00Aerial ability in basal Deinonychosauria
https://...Aerial ability in basal Deinonychosauria<br /><br />https://www.researchgate.net/publication/264044703_Aerial_ability_in_basal_Deinonychosauria<br /><br /> <br /><br />I was particularly interested in this point:<br /><br /> <br /><br />The values of “potentially neoflightless character score and<br /><br />grade” of 7.5-24 and 49-66 calculated by Paul(2002, table 11.1)<br /><br />for basal(Protarchaeopteryx, Caudipteryx, Avimimus)and derived<br /><br />(Oviraptoridae)members of Oviraptorosauria are second only<br /><br />to those for Dromaeosauridae(38.25 and 83)among the non-avialan Theropoda.<br /><br />This makes it probable that the ancestors of the<br /><br />presently known flightless members of Oviraptorosauria <br /><br />possessed aerial ability superior to that of Anchiornis (“potentially<br /><br />neoflightless character score & grade” for the more derived<br /><br />Troodontidae =17.5 and 45)<br />Dr. Pterosaurhttps://www.blogger.com/profile/13137867768653523183noreply@blogger.comtag:blogger.com,1999:blog-3049195237412585561.post-84311371057567430152016-04-06T08:35:36.395-07:002016-04-06T08:35:36.395-07:00http://pterosaurnet.blogspot.ca/2015/01/dinosaur-t...http://pterosaurnet.blogspot.ca/2015/01/dinosaur-to-bird-improbable-rates-of.html<br />Dr. Pterosaurhttps://www.blogger.com/profile/13137867768653523183noreply@blogger.comtag:blogger.com,1999:blog-3049195237412585561.post-42803174703314495862016-04-06T07:52:32.885-07:002016-04-06T07:52:32.885-07:00Assessing Arboreal Adaptations of Bird Antecedents... <br />Assessing Arboreal Adaptations of Bird Antecedents: Testing the Ecological Setting of the Origin of the Avian Flight Stroke<br /><br />http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0022292<br /><br />“Microraptor, Anchiornis and Epidendrosaurus, have significantly increased fore- and hindlimb indices when compared to other non-avian theropods (uneven t-test tforelimb = −10.971, P(α = 0.05)<0.0001, hindlimb = −3.4059, P = 0.005).<br /><br />Microraptorines have significantly larger BI values compared to non-avian theropods (unequal variance t-test t = −4.4725, P = (same)<0.0001) <br /><br />Microraptorines have significantly increased CI values compared to other non-avian theropods (unequal variance t-test = −6.2351, P<0.0001).<br />Claw and grip-based climbing taxa tend to have enlarged MPI values [34], [74]. Microraptorines have significantly lower indices of approximately 1.0 (t = 8.7188, P<0.0001) compared to a mean non-avian theropod value of 1.45.”<br /><br />It seems that the basal Paraves are dissimilar to actual theropods.<br />Dr. Pterosaurhttps://www.blogger.com/profile/13137867768653523183noreply@blogger.com