tag:blogger.com,1999:blog-2156944512466583246.post2019967374859808033..comments2024-03-18T18:17:34.333+01:00Comments on Theropoda: Miti e leggende post-moderne sui dinosauri mesozoici: Le squame di CarnotaurusUnknownnoreply@blogger.comBlogger45125tag:blogger.com,1999:blog-2156944512466583246.post-43077979262157042442021-02-04T21:40:14.149+01:002021-02-04T21:40:14.149+01:00"Sure maybe feathers were present on areas th..."Sure maybe feathers were present on areas that didn't preserve skin, but it's no more likely to be true than for hadrosaurids." I probably wouldn't say that, since we actually have full body impressions for hadrosaurs, unlike Carnotaurus.Noasaurhttps://www.blogger.com/profile/04311084551979795446noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-7773397637426753672016-11-03T00:28:06.690+01:002016-11-03T00:28:06.690+01:00"Tutta la fauna di una certa dimensione dei c..."Tutta la fauna di una certa dimensione dei climi aridi ha una colorazione chiara, sia per mimetismo che per protezione termica: dromedario, orice docet. <br />Anche scendendo con le taglie la lezione rimane: fennec, gerboa dalle grandi orecchie, topo del deserto ecc ecc."<br /><br />What about extant, desert-dwelling, feathered theropods?<br /><br />http://www.arkive.org/ostrich/Warren JBhttps://www.blogger.com/profile/11743987856127631574noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-73368192964138017782016-03-06T14:15:34.190+01:002016-03-06T14:15:34.190+01:00La situazione si è fatta parecchio effervescente.....La situazione si è fatta parecchio effervescente...Anonymoushttps://www.blogger.com/profile/03325823296859880944noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-50539643282440985302016-03-06T11:12:59.456+01:002016-03-06T11:12:59.456+01:00C'è un errore logico nella tua domanda. Ne par...C'è un errore logico nella tua domanda. Ne parlerò in un post...Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-18608964343154325542016-03-06T10:30:04.112+01:002016-03-06T10:30:04.112+01:00gli abelisauri in quanto ceratosauri non avevano a...gli abelisauri in quanto ceratosauri non avevano anche gli osteodermi essendo stati trovati osteodermi in ceratosauri? <br /><br />Valeria Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-39612107229627202002016-03-03T21:04:00.997+01:002016-03-03T21:04:00.997+01:00Premettendo e ribadendo la mia ignoranza in materi...Premettendo e ribadendo la mia ignoranza in materia, continuo a chiedermi (è la seconda volta che lo in questi giorni) come mai si tiene in considerazione la filogenetica per sostenere iconograficamente Tyrannosaurus, Deinonychus e altri dinosauri carnivori rivestiti di piumaggio anche senza ritrovamenti di prove dirette che in vita questi lo fossero (così magari sembrano più grossi e cattivi) Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-36777294355549275932016-03-03T14:34:19.503+01:002016-03-03T14:34:19.503+01:00Thanks, Matt.
I remain skeptical on phylogenetic g...Thanks, Matt.<br />I remain skeptical on phylogenetic ground. Just because we see a topologically similar series of quill knobs in just a few modern avians we cannot argue the same feature is homologue in Concavenator.<br />I'll discuss this in a post, soon.Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-25168333811135799192016-03-03T14:12:48.827+01:002016-03-03T14:12:48.827+01:00Sorry again, I forgot to include a link in case yo...Sorry again, I forgot to include a link in case you hadn't seen the study. This was just an SVP poster so far and I'm only going by the write-up here: http://godzillin.blogspot.com/2015/11/los-bumps-de-concavenator-quill-knobs-o.html<br /><br />So, as I said, still preliminary, but they seem to have addressed the points of criticism against the quill knob interpretation.Matt Martyniukhttps://www.blogger.com/profile/04220900229537564466noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-15712631755590762522016-03-03T14:09:13.479+01:002016-03-03T14:09:13.479+01:00Yes, I'm aware of that argument which has been...Yes, I'm aware of that argument which has been put forward in a few places and seems reasonable. however, the authors tested this by reconstructing the muscles and finding no correlation with a raised muscle insertion point. In fact they concluded that the arm musculature expected in that area normally attach onto a smooth surface, not raised ridge. They also claim that the same area (whetherMatt Martyniukhttps://www.blogger.com/profile/04220900229537564466noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-70693259601400958072016-03-03T13:00:18.915+01:002016-03-03T13:00:18.915+01:00Scusa. Schermo troppo piccolo nn ho visto bene. Gr...Scusa. Schermo troppo piccolo nn ho visto bene. GraziePaleobonettus feroxhttps://www.blogger.com/profile/06913930923078009389noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-561122259447490682016-03-03T09:36:39.329+01:002016-03-03T09:36:39.329+01:00That's a great news, Christophe!
I'm not s...That's a great news, Christophe!<br />I'm not surprised by the absence of evidence of filamentous integument: hope a sedimentological analysis may indicate if and how such absence may be taphonomically biased. In fact, agree with you that such absence does not mean automatically that Carnotaurus lacked filamentous structures.Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-83628304982052740842016-03-03T08:34:50.139+01:002016-03-03T08:34:50.139+01:00I'm actually working on a better description o...I'm actually working on a better description of the Carnotaurus skin, as well as that of non-maniraptoriform theropods. So far, all the skin impressions preserved in the different part of the Carnotaurus body (tail, scapular area, thoracic region) that I could examined thoroughly one month ago, do not show any sign of protofeather-like structures. It doesn't mean Carnotaurus was not Anonymoushttps://www.blogger.com/profile/16241817488461509041noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-64704417441270638022016-03-03T06:46:04.601+01:002016-03-03T06:46:04.601+01:00We certainly do need a better description of Carno...We certainly do need a better description of Carnotaurus' skin, but its "granules ... separated from one another by narrow furrows" are scales in the sense that e.g. sauropods and hadrosaurs are scaled. Not homologous to those in fish, and maybe not to those in lepidosaurs for all we know, but still scales. <br /><br />Also, Czerkas was present in 1984 when Carnotaurus' Mickey Mortimerhttps://www.blogger.com/profile/08831823442911513851noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-89241535867296823132016-03-03T06:33:35.263+01:002016-03-03T06:33:35.263+01:00Taphonomy matters: few information on the Carnotau...Taphonomy matters: few information on the Carnotaurus depositional setting and taphonomy is available. As I showed in the past, any inference on tegument without a taphonomic analysis may led to wrong interpretation of the skin. Compared how differently Psittacosaurus specimens are preserved in different formations of the Jehol Biota. I suspect that if you find a Psittacosaurus buried the same Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-58084880099208452272016-03-03T06:26:34.213+01:002016-03-03T06:26:34.213+01:00The side of Concavenator ulna with the impression ...The side of Concavenator ulna with the impression is not the lateral side, but the anterolateral distal to the brachial fossa. Muscles insert there, no skin. This is why I am skeptical on these marks as being quill knobs.Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-75440968501390066122016-03-03T01:59:30.077+01:002016-03-03T01:59:30.077+01:00What do you think of the SVP abstract/presentation...What do you think of the SVP abstract/presentation defending the interpretation as quill knobs? They point out that some modern birds have quill knobs anchored along the lateral side of the ulna in virtually the same position.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-23580913647044892742016-03-02T23:56:53.088+01:002016-03-02T23:56:53.088+01:00Hi Andrea,
At least one colour image of part of t...Hi Andrea,<br /><br />At least one colour image of part of the skin of <i>Carnotaurus</i> has been published - Plate 20 in Fernando Novas' 2009 book <i>The Age of Dinosaurs in South America</i>. Looking at that image, the scales on the tail extend at least as high as the level of the transverse processes. Unless the filaments on the tail of Davide Bonadonna's reconstruction are really Steve Phttps://www.blogger.com/profile/11531506698015954930noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-2809746284543807472016-03-02T20:12:28.270+01:002016-03-02T20:12:28.270+01:00The Concavenator "quill knobs" are in th...The Concavenator "quill knobs" are in the wrong side of ulna for being feather attachment sites. Currently, no non-maniraptoran shows evidence of pennaceous feathers, just some form of thick rachis.Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-38529351028443324822016-03-02T20:04:01.480+01:002016-03-02T20:04:01.480+01:00Maybe unlikely, but not implausible considering th...Maybe unlikely, but not implausible considering the recent arguments for quill knobs in Concavenator rather than as an inter-muscular line. It may be that "flight feathers" first evolved for display and intimidation on the forelimbs. This would also go a long way towards explaining the bizarre forelimb anatomy of abelisaurids.<br /><br />I agree the big feather head crest looks silly. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-45864557403736837742016-03-02T14:54:37.460+01:002016-03-02T14:54:37.460+01:00Rispondo sia a C. che a Pietro, che domandano un c...Rispondo sia a C. che a Pietro, che domandano un commento sul post di Witton.<br />Egli interpreta a mio avviso troppo alla lettera la distribuzione del tegumento in Carnotaurus. Innanzitutto, non è descritto come "squamato", e sopratutto, Witton pare non notare che tutte le tracce di tegumento provengono dalla parte lateroventrale del corpo, e non dalle regioni dorsali. Come ho scrittoAndrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-141500339361124782016-03-02T14:20:57.211+01:002016-03-02T14:20:57.211+01:00Un articolo estremamente interessante. Posso doman...Un articolo estremamente interessante. Posso domandarti un parere sul recente post di Witton, che ha parimenti trattato del tegumento di Carnotaurus? Grazie mille!<br /><br />PietroAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-21674032592035332052016-03-02T00:21:09.513+01:002016-03-02T00:21:09.513+01:00Postilla: hai mai letto questo post? http://markwi...Postilla: hai mai letto questo post? http://markwitton-com.blogspot.it/2015/12/dinosaur-scales-some-thoughts-for.html<br /><br />Nel caso, che ne pensi? C.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-16102483023343750482016-03-01T20:40:27.816+01:002016-03-01T20:40:27.816+01:00Who is wiser? All those perpetuating unsupported s...Who is wiser? All those perpetuating unsupported stereotypes, or the single guy complaining about that perpetuation?Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-3028547248493050972016-03-01T20:33:42.309+01:002016-03-01T20:33:42.309+01:00A great necessary post about the actual knowledge ...A great necessary post about the actual knowledge we have on Carnotaurus skin, something Jaime Headden already referenced a few years ago. If I had to nitpick, your introduction shows a lot of bitterness and contempt, wich, though understandable, isn't very wise. Apart from that, great reminder. ^^Guillaume Babeyhttps://www.blogger.com/profile/06589225800590147697noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-62298226266117809452016-03-01T17:41:19.517+01:002016-03-01T17:41:19.517+01:00Effettivamente ho fatto un errore grossolano ad ut...Effettivamente ho fatto un errore grossolano ad utilizzare quel termine, soprattutto parlando di fossili. Comunque, tutte queste domande sulle ricostruzioni che faccio a te in quanto paleontologo, quindi uno che è a conoscenza di fatti concreti, mi servono proprio (ma spero servano a tutti) per scindere i fatti dalle leggende, ed oggi il post su Carnotaurus credo possa aver detto molto a tanti.<Anonymousnoreply@blogger.com