tag:blogger.com,1999:blog-2156944512466583246.post1988436687562182565..comments2024-03-18T18:17:34.333+01:00Comments on Theropoda: _Flexomornis_ Tykoski e Fiorillo, 2010Unknownnoreply@blogger.comBlogger4125tag:blogger.com,1999:blog-2156944512466583246.post-68782724797603145512010-01-30T17:19:46.254+01:002010-01-30T17:19:46.254+01:00A Late Jurassic origin is plausible because there&...A Late Jurassic origin is plausible because there's Archaeopteryx isolated in Europe, requiring older ancestry that link it to sister-groups as the Asian maniraptorans. I agree that what I said was a bit simplistic, since we know very few sites with numerous avifaunas. Enantiornithes's record could be poor, but we have data from another coeval vertebrate groups that show analogous João Simõeshttps://www.blogger.com/profile/10222169018695033058noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-73800478286849383012010-01-30T16:03:33.675+01:002010-01-30T16:03:33.675+01:00I think your scenario is too simple. We know only ...I think your scenario is too simple. We know only 20-30 enantiornithines in 70 milions years, so, it's premature any paleo-bio-geographic model for their distribution.<br />There are not evidences that they originated in Asia. We know a rich avifauna from Valanginian-Barremian from China, but it's co-eval with Barremian forms in Spain. Both Iberomesornis and Protopteryx (respectively, Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-70486042393106560242010-01-30T15:47:08.631+01:002010-01-30T15:47:08.631+01:00Enantiornithes were present in Albian Australia (G...Enantiornithes were present in Albian Australia (Griman Fm, Nanantius), so we may presume an old presence in South Gondwana. Nanantius must be part of more numerous clade including still unfound birds in Indomadagascar, Africa, South America, Antarctica. Woodbine Formation's fauna is similar to French Charentes, so we can predict the presence of Flexomornis' relatives in Europe. The few João Simõeshttps://www.blogger.com/profile/10222169018695033058noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-36508296918064473982010-01-30T15:42:26.606+01:002010-01-30T15:42:26.606+01:00Aspetteremo fiduciosi il responso di megamtrice.
O...Aspetteremo fiduciosi il responso di megamtrice.<br />Oltretutto gli uccelli mesozoici sono molto affascinanti, e uno dei motivi per cui apprezzo questo blog è proprio l'attenzione che dedichi ai teropodi meno "appariscenti" e cinematografici. <br />Insomma divulgazione scientifica e non fantasy.<br /><br />(oltre ovviamente al fatto che indichi sempe le fonti)<br /><br />ErodotoAnonymousnoreply@blogger.com