tag:blogger.com,1999:blog-3653345901774701895.post5331382368609368..comments2024-03-23T12:02:36.626-07:00Comments on Mark P. Witton's Blog: Revenge of the scaly TyrannosaurusMark Wittonhttp://www.blogger.com/profile/02524696111911168322noreply@blogger.comBlogger88125tag:blogger.com,1999:blog-3653345901774701895.post-31474295397101428322022-03-12T20:50:17.638-08:002022-03-12T20:50:17.638-08:00This comment has been removed by a blog administrator.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-41085141864138062002022-03-12T20:49:54.856-08:002022-03-12T20:49:54.856-08:00This comment has been removed by a blog administrator.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-19898802715522592022021-12-24T03:00:01.926-08:002021-12-24T03:00:01.926-08:00This comment has been removed by a blog administrator.Skip Hire Birminghamhttps://www.blogger.com/profile/18407824174025064890noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-11535628012179257472021-12-24T03:00:01.489-08:002021-12-24T03:00:01.489-08:00This comment has been removed by a blog administrator.Skip Hire Birminghamhttps://www.blogger.com/profile/18407824174025064890noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-87645589956699448462021-11-03T01:55:05.017-07:002021-11-03T01:55:05.017-07:00This comment has been removed by a blog administrator.Platinumhttps://www.blogger.com/profile/09482441778669185216noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-41266489403790871862021-08-24T23:44:39.721-07:002021-08-24T23:44:39.721-07:00https://memes-generator.net/Meme/Skeleton-meme<a href="https://memes-generator.net/Meme/Skeleton-meme" rel="nofollow">https://memes-generator.net/Meme/Skeleton-meme</a><br />Jack Markhttps://www.blogger.com/profile/16215488942735554771noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-21151909643851559252020-12-29T12:59:00.781-08:002020-12-29T12:59:00.781-08:00This comment has been removed by a blog administrator.Jim Smithhttps://www.blogger.com/profile/12811289012737137817noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-74406173730304291322020-11-18T00:54:45.812-08:002020-11-18T00:54:45.812-08:00Wow! It's an impressive and a great article. ...Wow! It's an impressive and a great <a href="https://www.clippingpathview.com/" rel="nofollow"> article.</a> <a href="https://www.fiverr.com/share/QrK82p" rel="nofollow">Thank you</a> very much for it from <a href="https://www.clippingpathview.com/e-commerce-photo-editing-services-and-retouching-services/" rel="nofollow">ecommerce photo editing service provider</a><br /><br />Clipping Path Viewhttps://www.blogger.com/profile/02523020839892215597noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-61059240556316767472020-10-04T23:00:29.929-07:002020-10-04T23:00:29.929-07:00Very significant Information for us, I have think ...Very significant Information for us, I have think the representation of this Information is actually superb one. This is my first visit to your site.<br /><br />https://indusdesignworks.com/<br /><a href="https://indusdesignworks.com/structural-engineering.php" rel="nofollow">Freelance structural engineering job</a>Indus Design Workshttps://www.blogger.com/profile/15159086851627146285noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-47853805250416754312019-12-29T14:39:55.235-08:002019-12-29T14:39:55.235-08:00Did you... even read the post.Did you... even read the post.Creampandahttps://www.blogger.com/profile/05216723331563727721noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-61564696001401579952018-06-25T23:10:41.643-07:002018-06-25T23:10:41.643-07:00Thanks for sharing, this is a fantastic post.Reall...Thanks for sharing, this is a fantastic post.Really thank you! Awesome.<br />Robert Smithhttps://www.clippingsolutions.com/noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-3370891615428950372018-05-11T15:51:30.850-07:002018-05-11T15:51:30.850-07:00Feathers+dinosaurs=awesomeFeathers+dinosaurs=awesomeAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-50665232849886735052018-03-23T09:37:10.173-07:002018-03-23T09:37:10.173-07:00I really like this article. Thanks for explaining ...I really like this article. Thanks for explaining the situation in such a detailed and unbiased manner..https://www.blogger.com/profile/02298172730306178974noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-54901655313438756062018-01-09T14:48:28.741-08:002018-01-09T14:48:28.741-08:00Something of interest regarding ontogenic changes ...Something of interest regarding ontogenic changes in integument Mr. Witton<br />A baby Psittacosaurus is known, covered in filaments, despite an adult specimen showing mostly scales besides the famous quilled tail<br />https://mobile.twitter.com/tetzoo/status/610875404014997506<br />Spread the word fellow palaeontology enthusiasts (but don't exaggerate or extrapolate too much)!!MrCrownoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-79639315669044755592017-09-23T09:29:23.978-07:002017-09-23T09:29:23.978-07:00I still believe that the Saurian rex with it's...I still believe that the Saurian rex with it's small changes is still accurate.<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-67205565704316305922017-08-15T17:10:51.574-07:002017-08-15T17:10:51.574-07:00I'm so sorry I didn't respond sooner. I di...I'm so sorry I didn't respond sooner. I didn't get notifications on whether someone responded to this ^_^;<br /><br />That is a very good point. I remember Albertonykus doing a pic discussing common arguments against feathers that brought up a similar point about why human hair is no longer as extensive as it once was (we were able to make our own heat sources, i.e, fire and clothing, so large amounts of fibres stopped being necessary).<br /><br />Reading this again after so long, I'm really digging the idea of "fluffy babies, scaly adults" making a comeback for Tyrannosaurus--I remember back when that was considered the MOST plausible feathery tyrant hypothesis, and it'd make a lot of sense imo. Hopefully we'll get something to lend some credence to this - maybe a baby rex or other tyrannosaurid hatchling with downy impressions?CJCroen1393https://www.blogger.com/profile/09953786490603402779noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-79674006119028054242017-08-15T17:02:10.622-07:002017-08-15T17:02:10.622-07:00I'm not Witton, but if you want my two cents o...I'm not Witton, but if you want my two cents on it, I would argue so. It might also help that Nanuqsaurus was only half T. rex's size.CJCroen1393https://www.blogger.com/profile/09953786490603402779noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-87420864785996313812017-07-14T09:06:47.303-07:002017-07-14T09:06:47.303-07:00Thing is, though, recent Ornithomimid feather impr...Thing is, though, recent Ornithomimid feather impressions show a covering roughly similar to that of an Ostritch with a Kulindromeus-like bare tail, so I'd think tail might not be as likely for Deinochirus as it was before.<br /><br />The real question to the rest of its body depends entirely on the temperature, climate, environment and Plantlife of the Nemegt formation, which as far as I'm aware, we know very little about. I'd say they'd, at the most extensive feather loss, would at least keep wing fans for display.Kelston Hublerhttps://www.blogger.com/profile/05221212213305763537noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-41496729154880892542017-07-14T08:55:44.039-07:002017-07-14T08:55:44.039-07:00Great article, as usual! Always informative readin...Great article, as usual! Always informative reading your articles.<br /><br />While metabolic rates would be an issue with feather coverings, it is important to note that almost all the animals researched for this (Elephants, Ostritches, etc) are herbivores (well, mostly herbivores for Ostritches). Herbivores have a more complicated digestion process than carnivores and require much more energy to process plants, hence herbivores produce much more metabolic energy than carnivores. We sadly don't have any giant, protofeathered carnivores living in warm environments to really compare Tyrannosaurids with. Please tell me if I'm wrong.<br /><br />Also, I'm still not completely sold on the lack of a "cape," as you put it, at least to some extent on the body. If it covered a third or a fourth of the animal, wouldn't it not matter how thick it was as a large portion of the body was still bare and body heat could escape out of that? Lions, while not as big as T.rex, show that perhaps predators in warm environments can pull off large coverings on intugement on some sections of their body, keeping them for display purposes or for extra protection against rivals in some instances. Dinosaurs, being stem-birds would likely be much more big on visual display than mammals.<br /><br />Also, they don't specify where on the neck the scales are. It could probably be on the wattle/dewlap for all we know.Kelston Hublerhttps://www.blogger.com/profile/05221212213305763537noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-63139272397970308202017-07-11T03:39:40.719-07:002017-07-11T03:39:40.719-07:00Tarsal feathers of barn owls are real feathers, pl...Tarsal feathers of barn owls are real feathers, plucking them one can see a folicle (I've done it today), sheltered by the notch in the scute. I think feathers were the ancestral structures, later modified into scutes, surely some regulatory genes are involved in thedevelopment of feather vs scutes, and sometimes the regulation fails and we can see oddities as tarsal feathers in Griffon vultures.<br /><br />Chabier G.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-78584479409408654082017-07-08T06:14:32.752-07:002017-07-08T06:14:32.752-07:00Looking at some photos of barn owl feet (and the o...Looking at some photos of barn owl feet (and the odd Matthew Martyniuk blog post) it looks like the feathers originate from the tarsal scutes rather than the reticula. Given some facts and assumptions:<br /><br />- owl tarsal feathers originating from the edge of tarsal scutes, not between scutes<br />- the possibility (likelihood?) of tarsal scutes being modified beta-keratin feathers<br />- reticula being arrested pre-feather, alpha-keratin structures<br />- tyrannosaurid scales being a form of, or related to, reticula (particularly if secondarily featherless)<br />- tyrannosaurid scales showing well-defined preservation, with no apparent filament attachments between or within scales<br /><br />... I'd view owl tarsal feathers as developed continuations of the tarsal scutes, rather than completely separate structures, and that such a thing would be much less likely with tyrannosaurid reticula. (When I see folk arguing for filaments sprouting between tyrannosaurid scales, I wonder why that would be if [<i>if</i>] the 'scales' <i>are</i> the 'feathers')<br /><br />I'll admit that's a fairly uneducated guess on my part, though it seems reasonable to me. ('Continuations of tarsal scutes' might be a bit much, though) More densely-feathered bird feet like those of snowy owls (<i>Bubo scandiacus</i>) and ptarmigans (<i>Lagopus mutus</i>) give me pause, though experience of the ability of feathers to wrap around and conceal unfeathered skin give me a little more confidence that their reticula (non-plantar reticula at any rate) don't explode with white fuzz every winter.<br />I'd need to go check, though.<br /><br />dinogoss.blogspot.co.uk/2013/09/youre-doing-it-wrong-dino-foot-scales.htmlWarren JBhttps://www.blogger.com/profile/11743987856127631574noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-21556159986728158942017-07-06T00:42:59.370-07:002017-07-06T00:42:59.370-07:00Yeah Nanuqsaurus does seem like an outlier at the ...Yeah Nanuqsaurus does seem like an outlier at the moment, I'm currently thinking most tyrannosaurids were basically naked skinned or somewhere close to naked skinned; though again, I think that is more likely to be because of body size and the climate of their habitats, rather than cladistics. Or to put it another way, if another polar tyrannosaurid was found, I would expect it to have a filamentous covering whether or not it was a sister taxon to Nanuqsaurus. And I daresay the Prince Creek Ugrunaaluk and Pachyrhinosaurus may have had some kind of pelt, perhaps moulting with the seasons.Ictonyxhttps://www.blogger.com/profile/08653229213786382920noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-36918347986442552352017-07-05T14:25:02.147-07:002017-07-05T14:25:02.147-07:00"I think ideas such as 'basal tyrannosaur..."I think ideas such as 'basal tyrannosauroids had a pelt and tyrannosaurids were naked skinned' are barking up the wrong tree."<br /><br />Personally, I can agree with you that an example like Nanuqsaurus - small size, high latitude - might have retained (redeveloped?) a filamentous covering, but I don't think anyone's arguing against that in particular. (It'd be like a smaller version of the 'coelurosauria <i>ergo</i> fuzzy tyrannosaurs' bit, at this point) Though looking at the fossil evidence, it could be hard to argue that it wasn't an outlier in that regard, barring an undiscovered radiation of Nanuqsaurus & chums.Warren JBhttps://www.blogger.com/profile/11743987856127631574noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-64005838277744576122017-07-04T07:28:23.159-07:002017-07-04T07:28:23.159-07:00I think people put too much stock in phylogenetic ...I think people put too much stock in phylogenetic bracketing when thinking about the integument of a given dinosaur lineage. We know from elephants and rhinos that closely related taxa - even ones with slow generation times - can evolve huge differences in the length and density of filamentous integument within a few million years. Combine this with the potential interplay of body size and climate, and I think ideas such as 'basal tyrannosauroids had a pelt and tyrannosaurids were naked skinned' are barking up the wrong tree. When it comes to multi-tonne dinosaurs, I think this is going to turn out to be a species to species thing based largely on habitat, it's not going to be big areas of the dinosaur tree that are either EXCLUSIVELY filamentous or EXCLUSIVELY naked. When it comes to small dinos, I imagine most of them retained an extensive pelt inherited from basal ornithodirans. That's my two cents anyway.Ivan Kaynoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-42585430078166812552017-07-04T02:24:35.934-07:002017-07-04T02:24:35.934-07:00Hmm.. I apparently forgot a few cases. Namely hors...Hmm.. I apparently forgot a few cases. Namely horses, lions, etc. Even so, the point still stands that gigantic feet-long hair is not common in our relatives the apes.Pds3.14https://www.blogger.com/profile/01042151103642336762noreply@blogger.com