tag:blogger.com,1999:blog-2156944512466583246.post2105903509052797496..comments2024-03-18T18:17:34.333+01:00Comments on Theropoda: Tyrannotyrannus vs SpinitatorUnknownnoreply@blogger.comBlogger19125tag:blogger.com,1999:blog-2156944512466583246.post-7863133572232282192013-07-05T08:27:17.663+02:002013-07-05T08:27:17.663+02:00Interessantissimo post, è sempre un piacere seguir...Interessantissimo post, è sempre un piacere seguirti! Marcohttps://www.blogger.com/profile/05581880011607935556noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-63035575083596978922013-07-03T10:39:23.774+02:002013-07-03T10:39:23.774+02:00Per altro, non vorrei sbagliarmi, ma l'esempla...Per altro, non vorrei sbagliarmi, ma l'esemplare Milanese non è quello presumibilmante più grande tra quelli noti?<br /><br />ValerioAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-54121421417950566602013-07-02T22:27:49.174+02:002013-07-02T22:27:49.174+02:00Fine di un mito!Fine di un mito!Luigi335noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-34764481225466603972013-07-02T21:00:37.635+02:002013-07-02T21:00:37.635+02:00I repeat: isolated mandibular bones say nothing ab...I repeat: isolated mandibular bones say nothing about total body size. <br />1- It is not demonstrated that MSNM V4047 was 10% bigger than the holotype.<br />2- Even a 10% size difference between skull bones does not mean that one was 10% larger than the other. <br /><br />It seems to me that most of you don't know that animals in populations are variable and that you cannot simply use the Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-67474453322655193332013-07-02T20:40:48.093+02:002013-07-02T20:40:48.093+02:00Good point on the incompleteness of the other mega...Good point on the incompleteness of the other megalosauroids, in fact various skeletals have restored Suchomimus' skull anywhere from ~120cm right up to ~170cm! (the former being from a skeletal seemingly used in a news article reporting the find, the latter being Jaime Headden's).<br /><br />Having said that, even Irritator's skull is not exactly complete, and even then your Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-55987658388952745302013-07-02T20:02:54.755+02:002013-07-02T20:02:54.755+02:00First, note that no complete skull of other spinos...First, note that no complete skull of other spinosaurds is known, so we cannot exclude others spinosaurids got a comparably elongated snout relative to total skull.<br />Based on snout alone, the snout of Spinosaurus is proportionally more elongate than those of Baryonyx and Suchomimus: the premaxilla and the rostral ramus of the maxilla are more elongate and shallower, thus it is very probable Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-69116646577344601082013-07-02T19:58:46.807+02:002013-07-02T19:58:46.807+02:00La "media" sta solo nella testa delle pe...La "media" sta solo nella testa delle persone.<br />Io parlo di fossili.Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-69058822135286262482013-07-02T19:49:35.528+02:002013-07-02T19:49:35.528+02:00Il motivo per cui si compie queste stime mi risult...Il motivo per cui si compie queste stime mi risulta alquanto inutile.<br />Le dimensioni di uno spinosauro adulto variano da soggetto a soggetto.<br />Se ci si basa su un solo esemplare non si ricava una stima accurata delle dimensioni che potevano raggiungere.<br />Non si puo` sapere se lo spinosauro "milanese" era un esemplare di dimensioni <br />piuttosto ridotte rispetto alla Anonymoushttps://www.blogger.com/profile/03325823296859880944noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-8681694448038519392013-07-02T19:48:13.845+02:002013-07-02T19:48:13.845+02:00Wouldn't a Spinosaurus with a 1.30-1.40 m skul...Wouldn't a Spinosaurus with a 1.30-1.40 m skull had a too short cranium with a too large snout, compared to others spinosaurids ?tedhttps://www.blogger.com/profile/10853335652206061926noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-66846188078266661612013-07-02T16:06:42.019+02:002013-07-02T16:06:42.019+02:00In conclusion, what I mean with all these posts is...In conclusion, what I mean with all these posts is: stop talking about the size of so scant material! :-)Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-78727015025970200732013-07-02T15:41:37.511+02:002013-07-02T15:41:37.511+02:00Well... 171, 161, 160, 163, 158cm... WOW, what a v...Well... 171, 161, 160, 163, 158cm... WOW, what a very fine resolution! But, that's science fiction! This is why I merely wrote: 130-140 cm: a better resolution is meaningless.<br />Also, note that the skulls of Baryonyx, Suchomimus and Torvosaurus are too incomplete (based on published material) to be used. Their sizes and shapes are recostructed, so cannot be used as "data" Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-37100492476589312392013-07-02T15:32:04.540+02:002013-07-02T15:32:04.540+02:00A better way to do surely would be with several ta...A better way to do surely would be with several taxa to provide a range of estimates, rather than just one?<br />I know Scott Hartman recently tried this same thing with Irritator, and achieved 158cm (although whether this refers to maximum skull length or just to the quadratojugal I'm not sure (FWIW the Dal Sasso reconstruction is 'only' 160cm to the quadratojugal).<br /><br />But I Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-17125997847788775052013-07-02T12:37:54.352+02:002013-07-02T12:37:54.352+02:00Thanks, yes 175 cm+ does seen excessive.
Paul ...Thanks, yes 175 cm+ does seen excessive. <br /><br /><br /><br />Paul W.<br /><br /><br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-54564778142170001842013-07-02T12:02:02.390+02:002013-07-02T12:02:02.390+02:00Mi piace molto questo post, solitamente quando cer...Mi piace molto questo post, solitamente quando cerco di estrapolare le dimensioni di un esemplare frammentario completandolo con un esemplare più completo utilizzo un metodo leggermente diverso (faccio una proporzione ed una media aritmetica). A proposito, a me non è particolarmente chiara una cosa: Angaturama è junior synonym di Irritator, ma io ho sempre saputo che USP GP/2T-5 (olotipo di Anonymoushttps://www.blogger.com/profile/15396504386615815210noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-48015545039475706072013-07-02T11:13:16.738+02:002013-07-02T11:13:16.738+02:00Andreabbe chiesto a chi sostiene quelle stime.
Va ...Andreabbe chiesto a chi sostiene quelle stime.<br />Va detto che il margine di incertezza delle variabili che incidono su queste stime è tale che ogni misura va presa con molta cautela, cosa che i professionisti sono sempre chiari nel rimarcare.<br />Proprio perché i range di incertezza è così ampio, a maggior ragione propendo per le stime più caute, e più in accordo con le dimensioni note in Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-84377662876675756992013-07-02T10:59:35.304+02:002013-07-02T10:59:35.304+02:00Molto interessante. Tuttavia sorge una curiosità, ...Molto interessante. Tuttavia sorge una curiosità, cos'ha portato a stime così differenti pur sempre in campo scientifico (escludendo il mondo dei fandom, deleterio come non mai per la divulgazione scientifica) ? Come mai altri considerano più plausibile un range superiore di dimensioni, nonostante a quanto pare si riveli difficilmente sostenibile? Mi sorprenderebbe una mera rincorsa al recordAnonymoushttps://www.blogger.com/profile/09207397360185683547noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-88828214427573566902013-07-02T10:17:17.781+02:002013-07-02T10:17:17.781+02:00The specimens used are:
Tyrannosaurus: LACM 23844 ...The specimens used are:<br />Tyrannosaurus: LACM 23844 (from Carr and Williamson 2004)<br />'Nanotyrannus': CMN 7541 (from Carr and Williamson 2004)<br />Irritator: SMNS 58022 + GP/2T-5 (from Dal Sasso et al. 2002)<br />Milan snout: MSNM V4047 (from Dal Sasso et al. 2002).<br /><br />NOTE: I acknowledge that different repetitions of this method may vary slightly in the results (in the Andrea Cauhttps://www.blogger.com/profile/10855060597677361866noreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-38900627113561906262013-07-02T10:00:52.633+02:002013-07-02T10:00:52.633+02:00Ma in quel documentario (mi sembra si chiamasse pa...Ma in quel documentario (mi sembra si chiamasse parco giurassico volume tre) lo spinosauro è molto più grande. Come si spiega tale fenomeno? ;D<br /><br />SimoneAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2156944512466583246.post-47993382345179422782013-07-02T10:00:16.281+02:002013-07-02T10:00:16.281+02:00It would help if we all knew what specimens you we...It would help if we all knew what specimens you were using and whether the numbers were reliable. You can't beat the fanboys by resorting to their level. Why not beat them to a pulp with the 'weak jawed' fish-eater argument and they wouldn't care if it was 20 metres or 2. <br /><br /><br />Paul W. Anonymousnoreply@blogger.com