tag:blogger.com,1999:blog-3653345901774701895.post8073177259909993973..comments2024-03-23T12:02:36.626-07:00Comments on Mark P. Witton's Blog: Theropod dinosaurs were a bunch of buttheads: the evidence for and development of ideas around theropod cranial combatMark Wittonhttp://www.blogger.com/profile/02524696111911168322noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-3653345901774701895.post-40421722727127289472022-02-04T17:50:31.082-08:002022-02-04T17:50:31.082-08:00This comment has been removed by a blog administrator.프로토https://www.blogger.com/profile/10432206743301799446noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-20414528347766170362021-12-11T03:06:34.915-08:002021-12-11T03:06:34.915-08:00Man,I may jump in on this TYRANNOBUTT THING!!A ver...Man,I may jump in on this TYRANNOBUTT THING!!A very interesting blog:)Antediluvian Tidbitshttps://www.blogger.com/profile/06333870440508754700noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-11933161604582349482021-11-26T03:24:08.002-08:002021-11-26T03:24:08.002-08:00I don't know if it has ever been explicitly ex...I don't know if it has ever been explicitly explored in the literature, but Duane Nash once had a similiar idea http://antediluviansalad.blogspot.com/2015/08/convergence-in-form-and-function-across.html?m=1.Davide Gioiahttps://www.blogger.com/profile/00541804529581203322noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-91989439177480191552021-11-24T08:41:08.787-08:002021-11-24T08:41:08.787-08:00May I ask, are there any other Hypercarnivorous an...May I ask, are there any other Hypercarnivorous animals that show such adaptations for intraspecific combat as Carnotaurus? Because I really can't think of any top predators alive today that have anything close to it, its all mostly big herbivores like Antelope and Deer. <br /><br />Do we have any hints as to why this kind of thing appeared so strongly in these dinosaurs and not other big carnivores?white-holehttps://www.blogger.com/profile/16853666388569852546noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-19626622067962112012021-11-13T05:54:42.834-08:002021-11-13T05:54:42.834-08:00I don't know if this idea has ever been explic...I don't know if this idea has ever been explicitly explored in the primary literature, but Duane Nash once had the same idea http://antediluviansalad.blogspot.com/2015/08/convergence-in-form-and-function-across.html?m=1.Davide Gioiahttps://www.blogger.com/profile/00541804529581203322noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-25990300773437177482021-11-08T13:59:24.182-08:002021-11-08T13:59:24.182-08:00Has the idea of these ridges as skulls reinforceme...Has the idea of these ridges as skulls reinforcements during predatory behaviours towards relatively large prey been looked at in academia? <br /><br />Most theropods with skull ornamentations are large carnivores, and among smaller theropods only the dromaeosaurs had well-defined supraorbital ridges-possibly because they were the only small theropods that regularly preyed on animals around their own size (troodontids, etc being poorly suited to tackle prey that wasn’t much smaller than them). <br /><br />Furthermore, it would appear that the shape and location of skull ornamentations follows a basic pattern in each group (i.e. carcharodontosaurids with skull ornamentations all have well-developed supraorbital ridges or bosses), which would suggest this was related to skull function in each of these groups, corresponding with the several different approaches for biting and killing prey in theropods.<br /><br />Of course, things like the horns of Ceratosaurus and Carnotaurus are obvious display/intraspecies combat-related features, but as a whole theropod head ornaments seem to be much more uniform than the head ornaments of various herbivores with weaponized headgear. BKhttps://www.blogger.com/profile/03759189747932749283noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-77853463438300192762021-11-02T03:42:56.958-07:002021-11-02T03:42:56.958-07:00In the reconstruction made by Troco, we discussed ...In the reconstruction made by Troco, we discussed this feature and included some lacrimal-nasal prominence: https://akns-images.eonline.com/eol_images/Entire_Site/2012107/600.sauron.mh.110712.jpg?fit=around%7C1200:1200&output-quality=90&crop=1200:1200;center,topAndrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-31159319706622749372021-11-01T02:25:08.978-07:002021-11-01T02:25:08.978-07:00Thanks Andrea. It would be fun to explore that in ...Thanks Andrea. It would be fun to explore that in a reconstruction.Mark Wittonhttps://www.blogger.com/profile/02524696111911168322noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-79151012071778234232021-11-01T00:33:05.268-07:002021-11-01T00:33:05.268-07:00"Unfortunately, taxa with these features - Eo..."Unfortunately, taxa with these features - Eocharchia and Sauroniops - are not especially well-known so we can’t see if these features were somehow echoed across the rest of the skull: might they have sported other enhanced bosses and ridges as well?"<br />Although nasal and lacrimal in Sauroniops are unknown, I suspect that in this genus thick ridges were present also along the dorsal margin of the lacrimal and/or nasal, based on the shape of the anterior process of frontal: the nasal ramus of the frontal in Sauroniops is thick and dorsally convex along its whole extent, with no evidence of reducing its depth while approaching the nasal-lacrimal articulations, so it is plausible that the same thick margin continued anteriorly along the dorsal surface of the snout.Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-32880998094955696382021-11-01T00:31:11.522-07:002021-11-01T00:31:11.522-07:00This comment has been removed by the author.Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-58225579065117971832021-10-28T21:14:51.916-07:002021-10-28T21:14:51.916-07:00Great blog post!!! I was wondering why you were th...Great blog post!!! I was wondering why you were thinking about it in your fb group. Happy to help!<br />Paleofan 150millhttps://www.blogger.com/profile/06455341408391374049noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-49498732801441337782021-10-28T18:00:25.319-07:002021-10-28T18:00:25.319-07:00Very nice blog post! I think we need to recognize ...Very nice blog post! I think we need to recognize different "tiers" with regards to headbutting. Even if an animal can't survive a straight-up charge at top speed ending in a collision with the head (like a bighorn sheep, muskox, or pachycephalosaur), it could still use the head for hard blows and smacks at close range (e.g. giraffes, and perhaps brontotheres). These theropods may not be the former, but I definitely think the latter is possible.Daniel Honghttps://www.blogger.com/profile/07650224550398771514noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-20489526103561651952021-10-28T16:50:27.914-07:002021-10-28T16:50:27.914-07:00Great stuff Mark! Thanks for finally giving these ...Great stuff Mark! Thanks for finally giving these features the specific attention they deserve. I feel as if they've been dismissed as "display" for too long. Question, does the presence of "armored skin" preclude the presence of scales? Hippos and Rhinos still have hair or does the "armor" only relate to the deeper layers of the dermis?TheLancianKnighthttps://www.blogger.com/profile/01594762273099052168noreply@blogger.com