tag:blogger.com,1999:blog-3653345901774701895.post2149110729004840714..comments2024-03-23T12:02:36.626-07:00Comments on Mark P. Witton's Blog: Azhdarchid pterosaurs: 'terrestrial stalkers' or pelican-esque 'scoop-feeders'?Mark Wittonhttp://www.blogger.com/profile/02524696111911168322noreply@blogger.comBlogger27125tag:blogger.com,1999:blog-3653345901774701895.post-86727344597025074752022-04-04T07:07:21.147-07:002022-04-04T07:07:21.147-07:00This comment has been removed by a blog administrator.wagnaribrahimhttps://www.blogger.com/profile/15792695895031423097noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-43547273709730092182017-07-11T23:50:34.222-07:002017-07-11T23:50:34.222-07:00All the muscles in the throat need blood in order ...All the muscles in the throat need blood in order to function, and luckily, the throat gets a lot of blood from one of the largest arteries in the body, the carotid artery, which also supplies blood to the brain. Read More At https://healthjunta.com/throat-anatomy/Anonymoushttps://www.blogger.com/profile/12379067122597681367noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-30957370753377564002015-05-11T13:03:52.490-07:002015-05-11T13:03:52.490-07:00I envision a fatal injury for both sides, not some...I envision a fatal injury for both sides, not something they would probably try....BKhttps://www.blogger.com/profile/03759189747932749283noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-22075435718755542962014-09-06T23:20:41.192-07:002014-09-06T23:20:41.192-07:00Assuming the giant azhdarchids had eyesight compar...Assuming the giant azhdarchids had eyesight comparable to that of the average modern bird, (quite likely) their giraffe-height vantage point would let them spot danger from a great distance over open ground. Anything large enough to pose a threat would have a difficult time staying hidden long enough to get within attack range.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-13822750166942592302013-11-21T22:40:13.737-08:002013-11-21T22:40:13.737-08:00This comment has been removed by a blog administrator.Anonymoushttps://www.blogger.com/profile/13115941918048786551noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-63374153803390882182013-11-10T21:47:59.225-08:002013-11-10T21:47:59.225-08:00ok you win that battle but not the war yes flying ...ok you win that battle but not the war yes flying lemur has webb finger and toe allso webb wing but flying squirrel do not have webbing between the finger and toe .all those animal are glider except the bat who has webbing on the finger not the toes it is a good flyer like pterosaurs both have real wing webb wing draco have on the rib for a wing not on the finger and toe only the flying geko has it on the toe and finger no wing. as they claim pterosaurs was a good flyer those wing could not help them to climb trees that why flightless bird are on the ground. if pterosaur was a glider = they can not fly=web finger and toe a match for a very aquatic animal they are in the good flying group with a giant wing that do not match webb finger and webb toe together=pterosaurs was flightless and it has claws of ornithosuchus dinosaur you have to have special claws and toe to climb trees like a iguana its not easy to climb trees ground up bingo pterosaurs is link with no verticalisation thecodont teeth reptile archosaur. i am 99 percent shore i am not ceolophysis i never lie in my life you did not do all the homework!!!!!!coelophysisnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-3407571303498670472013-11-10T14:43:35.542-08:002013-11-10T14:43:35.542-08:00I'm sure I did my homework, after all I never ...I'm sure I did my homework, after all I never had detention at school! <br /><br />I never said all animals with big brains could fly, didn't even suggest it, though I guess my use of full stops may have confused you there. <br /><br />So if all animals with webbed fingers/limbs are aquatic what about bats? and flying squirrels? and draco lizards?<br /><br />Now be honest now, this coelophysis on the dinosaurhome website has a very similar name to you and has similar problem with spelling and punctuation. Is you using a cunning disguise?<br />neilhttp://www.uk-wildlife.co.uk/noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-40561371579958624232013-11-08T17:32:23.948-08:002013-11-08T17:32:23.948-08:00i see some won with a big mouth and can not back ...i see some won with a big mouth and can not back it up and did not do his homework not like me ok webb finger and toe are clear red flag and it embarrassing but true and i hit nerve and it take a while for the pain to go away and it not science its man made and no scientist will take those webb feet to scientist critic ring they would be laugh out of the critic ring or public ring and the evidence will allways be there for a smarter scientist because that there job.the big brain in animal does mean it can fly like t.rex has flight furcula are you tell me t.rex can fly the same way fish has hollow bone monkey too on there body too are you tell me monkey can fly. sebecus croc stratiotosuchus has bird bipedal feature are you tell me croc are birds too. manta ray has a very large wing like pterosaur that why scientist think that why there brain are so big for a fish like pterosaurs brain is big for a crocodilian but not big like bird because bird are warm blooded and have nothing to do with reptile dinosaurs . to read this scientist blog i read any thing to follow that different no thanks i will follow that person on dinosaurhome website name ceolophysis is ego mite be bigger than the site but that person is smart that person does not believe in that shark and dolphin have feather and that person knows how spinosaurus sailfin works and that dinosaur decoding was a scam and young crocodilian feet are bigger than the adult crocodilian like t.rex that had been known since 1975 and that dinosaur are just prehistoric gator.coelophysisnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-53968473151992415732013-11-07T15:14:21.584-08:002013-11-07T15:14:21.584-08:00No.1 Please use proper punctuation and spelling, ...No.1 Please use proper punctuation and spelling, it makes it easier to read and understand.<br /><br />No. 2 I see nothing that in your comment that shows pterosaurs lived a sub aquatic lifestyle (though it hard to be sure I've read it correctly, see No. 1). I'm not sure what the brain size of manta rays has to do with aquatic lifestyle. Large brain size does not mean aquatic lifestyle, look at parrots and humans.<br /><br />No.3 It is a well documented fact pterosaurs had hollow lightly built but strong bones, convergent with those of birds that can fly, strongly suggesting they were adapted for flight, rather than swimming.<br /><br />To find out more about the evidence for pterosaur flight you should read the author of this blogs book called 'Pterosaurs'. Its got loads of good reviews, been endorsed by a number of palaeontologists and I can personally recommend it. Neilhttp://www.uk-wildlife.co.uknoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-63830421992708557992013-11-06T14:53:00.868-08:002013-11-06T14:53:00.868-08:00really!? are you for real? pterosaurs free finger ...really!? are you for real? pterosaurs free finger are webb and toes .manta ray brain is the biggest in fish pterosaurs brain is the biggest in crocodilian brain system.pterosaur unique skull feature are link with t.rex and the gharial crocodilian only have 3 finger claws they share full secondary bony palate sensory dot skin with there ancestor spinosauridae.!!!!!hello!!! the simi aquatic beaver the finger is not webb but there toes are most pond turtle is fully webb. this show pterosaur was a very aquatic croc ornithosuchidae is the ancestor of 3 finger dinosaur with the skull link the closes they can find ornithosuchidae ancestor was fully bipedal in dinosaur standard all theropod had some quadrupedal movement!!!coelophysisnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-86897656281685656482013-11-06T13:05:41.604-08:002013-11-06T13:05:41.604-08:00Really!? Are you for real?Really!? Are you for real?Neilhttp://www.uk-wildlife.co.uk/noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-61320562596319232502013-11-06T10:44:56.139-08:002013-11-06T10:44:56.139-08:00pterosaur could not fly it is a extreme aquatic d...pterosaur could not fly it is a extreme aquatic dinosaurs that link with ornithosuchidae with its claws and other feature its just a prehistoric gator that is mimic manta rays with its big crocodilian brain that why they found the fossil in lakes and seas and there eggs are like croc and turtlecoelophysisnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-36316593497963396162013-11-06T08:47:18.237-08:002013-11-06T08:47:18.237-08:00It's scaled based on hip height rather than le...It's scaled based on hip height rather than length because the oblique angle of the body. The top of the ilium is just over 3 m, which is the right height for a typical <i>Tyrannosaurus</i> (e.g. BHI 3033, 'Stan'). We took statements of tyrannosaur hip height from Hutchison and Garcia (2002) as the guideline here.Mark Wittonhttps://www.blogger.com/profile/02524696111911168322noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-84592843176681542742013-11-05T15:39:19.586-08:002013-11-05T15:39:19.586-08:00Just out of curiosity, how big is that Tyrannosaur...Just out of curiosity, how big is that Tyrannosaurus? It looks smaller than 40 ft.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-9461866630233294342013-11-03T13:26:08.716-08:002013-11-03T13:26:08.716-08:00Sorry, I meant "it's silly to think that ...Sorry, I meant "it's silly to think that things with long necks can skim feed.<br /><br /><br />I'm not by any strecth of imagination aligned with Averianov.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-26370329845724331562013-11-03T13:24:14.918-08:002013-11-03T13:24:14.918-08:00It saddens me that many people who propose alterna...It saddens me that many people who propose alternative lifestyles for azhdarchids downright ignore Habib's paper. It's one thing to disagree, it's another to propose something whilst basically ignoring papers that explain exactly why it's silly that things with long necks can't skim feed.<br /><br /><br />At least DP tries to adress the biomechanical problems.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-63493794004675743732013-11-01T07:42:34.065-07:002013-11-01T07:42:34.065-07:00And there's your next palaeoart project :-)And there's your next palaeoart project :-)Mike Taylorhttps://www.blogger.com/profile/06039663158335543317noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-64027634017954238982013-10-30T02:28:36.429-07:002013-10-30T02:28:36.429-07:00Good question. I guess tyrannosaurid skulls are pr...Good question. I guess tyrannosaurid skulls are pretty heavily built, which probably can't be said for any pterosaur skull. I imagine the former would win out if the two were forcibly introduced. That said, even <i>Tyrannosaurus</i> has plenty of soft bits. Mark Wittonhttps://www.blogger.com/profile/02524696111911168322noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-2726523425131768952013-10-30T02:22:33.916-07:002013-10-30T02:22:33.916-07:00Wow - eye-stabbing herons must be the stuff of nig...Wow - eye-stabbing herons must be the stuff of nightmares. Comments like this make me wonder if we underestimate the offensive capabilities of smaller carnivores and herbivorous animals generally. It seems that a heck of a lot of animals are far more dangerous than we would imagine.Mark Wittonhttps://www.blogger.com/profile/02524696111911168322noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-36597803099056979552013-10-30T02:17:51.489-07:002013-10-30T02:17:51.489-07:00Thanks for the comment, Hadiaz. I've not seen ...Thanks for the comment, Hadiaz. I've not seen 'Dino Lab', but it sounds a lot like 'Clash of the Dinosaurs' and similar grade fodder. I miss the days of non-sensationalist palaeo documentaries.<br /><br />On my <i>Tyrannosaurus</i>: we toyed with the idea of making it fully feathered, but decided to stick with the same integument used in <a href="http://markwitton-com.blogspot.co.uk/2012/12/the-joy-of-rex.html" rel="nofollow">this painting</a>. I think the red colouration came from half-remembered afternoons of playing with various <i>Jurassic Park</i> toys and video games! Mark Wittonhttps://www.blogger.com/profile/02524696111911168322noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-26948799462849559512013-10-29T21:30:53.831-07:002013-10-29T21:30:53.831-07:00Anecdotally speaking I remember talking with a lad...Anecdotally speaking I remember talking with a lady who did raptor monitoring in the Sierra and also did bird rehab voluntarily. She handled all sorts of raptors- great horned owls, golden eagles, red tails- which all poised their share of problems. But the type of bird that she had to quit rehabbing for fear of her own ocular health- herons, especially great blue herons. She said that they would especially target her eyes with thrusts of their sharp bills when cornered. A cornered azhdarchid- one can only wonder- but pinpointing all the mass and power behind those long bills- ouch!!!!Duane Nashhttps://www.blogger.com/profile/14467779935085970909noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-63240697604688628512013-10-29T17:35:28.186-07:002013-10-29T17:35:28.186-07:00Looking at the T rex and Aram together above, I...Looking at the T rex and Aram together above, I'm wondering if anyone has speculated on what a big azhdarchid's bill might do to T rex's head. It might be the last thing a big azhdarchid does, but it seems to me it might not be something the Tyrannosaur just shrugs off.<br /><br />I'm wondering, of course, about informed speculation. Mine doesn't count.<br /><br />Oh, and a post like this one brings up so many thoughts and questions I forget sometimes to say how much fun it was to read. Thanks!Mike from Ottawanoreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-76605198477821786992013-10-29T15:15:20.369-07:002013-10-29T15:15:20.369-07:00"I've discussed the over-statement of agg..."I've discussed the over-statement of aggressive behaviour of Mesozoic animals several times before, and I'm sure I'm not alone in finding portrayal of dinosaurs as angry murder/death/kill machines irritating. It's frustrating enough when seen in popular media, but particularly irksome when it seemingly influences scientific discussions."<br /><br />That reminds me of "Dino Lab" (You can see it on Netflix under "Discover: Prehistoric Planet"), which is an especially annoying doc b/c it pretends to test dino hypotheses scientifically when it can't even get basic dino facts right. The Troodon scene is a good example of what you're talking about b/c (besides mispronouncing Troodon & referring to Coelophysis as such) it argues against play behavior in dinos by claiming that "Troodon had enough intelligence to grab an object, lift it up, and turn it around, but it only stayed interested if the object was edible because feeding was its main occupation. There was no time in the prehistoric world for playing games. To survive, it had to stay focused on finding food and avoiding becoming someone else's meal."<br /><br />BTW, I really like the coloration of your T.rex (which I just noticed has dino-fuzz on the end of its tail).<br /><br />-Hadiazraptor_044https://www.blogger.com/profile/10538231485096397412noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-24264711830960287582013-10-29T14:03:24.950-07:002013-10-29T14:03:24.950-07:00Spot on, Mike. We actually discuss that in the pap...Spot on, Mike. We actually discuss that in the paper in some detail because azhdarchid mandibles have atypically long symphyses. This has all sorts of implications for not only mandible bowing, but it means that over half the jaw has to be submerged before any 'scooping' can happen. It's precisely the <i>opposite</i> morphology you'd want to be doing anything remotely pelican-like.Mark Wittonhttps://www.blogger.com/profile/02524696111911168322noreply@blogger.comtag:blogger.com,1999:blog-3653345901774701895.post-7513696290132988932013-10-29T13:58:46.594-07:002013-10-29T13:58:46.594-07:00Thanks Elijah.
"is it just me, or is the &#...Thanks Elijah. <br /><br />"is it just me, or is the 'human sleuth' in the scale diagram Benedict Cumberbatch? I know, it sound frivolous, but I'm just curious."<br /><br />Pfft. Since when do I do silly, frivolous things with my artwork? :)Mark Wittonhttps://www.blogger.com/profile/02524696111911168322noreply@blogger.com