|
|
Post by theropod on May 19, 2013 20:38:21 GMT 5
|
|
Fragillimus335
Member
Sauropod fanatic, and dinosaur specialist
Posts: 573
|
Post by Fragillimus335 on May 21, 2013 3:10:20 GMT 5
The largest fragmentary Stegosaurus with a rhino!  |
|
|
|
Post by theropod on May 21, 2013 4:38:53 GMT 5
I love that artwork, whose is it? And what specimen/remains is it scaled to?
|
|
Fragillimus335
Member
Sauropod fanatic, and dinosaur specialist
Posts: 573
|
Post by Fragillimus335 on May 21, 2013 8:29:47 GMT 5
Greg Paul! It is my favorite piece of his, it just looks so alive! It is scaled to some mysterious prints and dorsal plates that both seem to indicate that Stegosaurus did occasionally reach the ~9 meters that everyone like to quote!
|
|
|
|
Post by creature386 on May 21, 2013 15:08:29 GMT 5
|
|
|
|
Post by creature386 on May 21, 2013 16:53:50 GMT 5
Size scales including sauropods:  Scale bar equals at two meters. Source: files.figshare.com/94132/brachiotext.pdf The largest representatives of different terrestrial vertebrate clades, both extant and extinct. (A) Non-dinosaurian terrestrial vertebrates and birds: (a) the tortoise Geochelone gigantea, (b) the Komodo dragon Varanus komodoensis, (c) the Pleistocene Australian monitor † Varanus (Megalania) prisca, (d) the Eocene boid snake † Titanoboa cerrejonensis, (e) Homo sapiens, (f) the African elephant Loxodonta africana, (g) the long-necked Oligocene rhinoceros † Paraceratherium (Indricotherium) transouralicum, (h) Struthio camelus, (i) an unnamed Miocene † Phorusracidae. (B) non-avian dinosaurs: (a) the hadrodaur † Shantungosaurus giganteus, (b) the ceratopsian † Triceratops horridus, (c) the theropod †Tyrannosaurus rex, (d) the theropod † Spinosaurus aegyptiacus, (e) the sauropod † Brachiosaurus brancai, (f) the sauropod †Argentinosaurus huinculensis. Scale = 5 m. Sauroposeidon and Giraffatitan. Source for the last two images: www.ncbi.nlm.nih.gov/pmc/articles/pmc3045712/ |
|
|
|
Post by theropod on May 23, 2013 20:40:31 GMT 5
 www.prehistoric-wildlife.com/species/m/megalodon.htmlI know its not a size comparison in the strict sense, but given it is accurate, this is a good visual comparison of a Carcharocles megalodon and Carcharodon carcharias tooth. I was surprised how extremely flat the GWS tooth is compared to other meat-slicing animals that I know. It doesn't appear teeth are that fragile, if a macropredator can afford having such extremely thin ones and still employ tactics of ram-feeding and vicious shaking. Carnosaur teeth are significantly thicker compared to those of GWS. Does anyone have a picture of a Varanus komodoensis tooth in lingual/labial and mesial/distal views? |
|
|
|
Post by Grey on May 24, 2013 4:03:08 GMT 5
Don't forget that you have to use all the tooth for visualize the whole mechanical efficiency, so including the root for both type of teeth. Using this, the difference is not that much, both teeth are comparable in slenderness. The teeth of the great white being counterbalanced by their much wider basis, playing a last role in the robustness and the teeth of the carnosaurs are counterbalanced by their much longer root.
|
|
|
|
Post by Grey on May 24, 2013 4:08:54 GMT 5
Livyatan melvillei with young adult from the Rotterdam Museum. Once again, if someone have the skills to place the young man in the mouth of the entire model, that could be great.   |
|
stomatopod
Junior Member
Gluttonous Auchenipterid
Posts: 182
|
Post by stomatopod on May 24, 2013 19:05:10 GMT 5
That was the reason why I posted it, it seemed that much larger, primarily in lenght. The problem is, there are no primary sources to check its accuracy. Looking at it, the Indricothere also seems extremely large. and does anyone have a clue what that extremely long-necked sauropod could be? The cervical series seems much longer than in any discovrered taxon, including supersaurus. It is much longer than even the Shantungosaurus, actually the neck alone seems to be as long as the whole Giraffatitan. In hadn't even read that Bear-sized-idea when I posted it, it was just about the scale, but I highly doubt the average dinosaur was bear sized. Very likely there were many tiny forms, like Anchiornis or Epidexipteryx, which vastly outnumbered larger forms. It is true that dinosaurs seem more diverse in terms of size than mammals, but that can also be applied to the smallest ones being smaller. The large sauropod seems to be Greg Paul´s rather inaccurate Mamenchisaurus sinocanadorum. |
|
|
|
Post by theropod on May 24, 2013 20:19:45 GMT 5
Grey: The root is embedded in the bone. Including it would be biased towards animals with shorter but broader roots. The blade of the teeth, the part that sticks out, is definitely not even close to being as thin and fragile as some seem to believe. stomatopod: That explains a lot...
|
|
|
|
Post by Grey on May 24, 2013 21:16:43 GMT 5
No, that's the entire tooth that counts in the mechanical efficiency, excluding the root part is not wise. If sharks had not evolved to replace their teeth in their own way, they would have too a very deep root and here too, the root would have to be counted in the comparison.
Anyway, both types of animals are acknowledged to have a similar, if not totally the same, killing/feeding apparatus, relative to the thape of their teeth.
|
|
Fragillimus335
Member
Sauropod fanatic, and dinosaur specialist
Posts: 573
|
Post by Fragillimus335 on May 24, 2013 21:30:38 GMT 5
Bwahahah!!! I inspired that very sauropod comparison! Check the link! |
|
|
|
Post by theropod on May 25, 2013 22:22:50 GMT 5
If someone has the time and knows were to find the skeletals, a size comparison of Greg Paul's and Hartman's Giganotosaurus carolinii skeletal and Hartmans most recent revision of sue would be nice, to see the differences.
Best scale Giganotosaurus to both figures for femur lenght, or use a skull whose lenght you know and superimpose it to fit.
|
|
Fragillimus335
Member
Sauropod fanatic, and dinosaur specialist
Posts: 573
|
Post by Fragillimus335 on May 26, 2013 2:43:19 GMT 5
 A scale I made of some of the largest organisms in earth's history! Included are: Amphicoelias, Brachiosaurus n., Blue whale, Huaxiaosaurus, Indricotherium, Mammuthus t., Spinosaurus, Ceratopsipes, Stegosaurus, giant Nodosaur, Utahraptor, Giraffe, Therizinosaurus, Quetzalcoatlus, and a human. |
|
