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Dino Talk May 11-20, 2002: A Dinosaur Forum




How fast do you suppose raptors run, in comparison to ornithomimids?
from gianna, age ?, ?, ?, ?; May 19, 2002


"CLASSIFICATION
Alamosaurus Gilmore, 1922 [nomen dubium?]

* TYPE SPECIES: A. sanjuanensis Gilmore, 1922 [nomen dubium?]

Animalia
Vertebrata
Tetrapoda
Sauropsida
Archosauromorpha
Ornithodira
Dinosauria
Sauropodomorpha
Sauropoda
Macronaria
Titanosauria

MEASUREMENTS
LENGTH: 21 m MASS: 30 tonnes

TIME
Maastrichtian

PLACE
New Mexico, Texas, Utah

REMAINS

* partial postcranium

* USNM 10,486 [holotype]: left scapula

* USNM collection [paratype]: right ischium

* USNM 15658: caudal centrum

* USNM 15560: 30 most anterior caudal vertebrae (articulated); 25 chevrons; ischia; left scapulocoracoid; right forelimb lacking phalanges, 2 sternal plates, 3 fragmentary ribs

ESSAY

The only North American sauropod from the Late Cretaceous."

Aha! There's some stuff off the Dinosauricon - that should help.
Alamosaurus is the last ever known sauropod dinosaur - being from the maastrichtian, Alamosaurus probably died in the great K-T extinction along with T - Rex and other late cretacious dinosaurs.

Sauropod evolution: The Vulcanodontidae and the Indian Barapasauridae where the first true sauropod families to evolve, in the early jurassic.

By the late jurassic they had evolved into six main groups, the Diplodocidae, Dicraeosauridae, Euheloponidae, Cetiosauridae, Brachiosauridae and Camarasauridae.

But by the cretacious, as plants started overtaking dinosaurs in the evolutionary arms race, many herbivores where replaced by more adapted animals, better suited to cope with plants that fight back.
So most of the above groups died off. But the sauropods wheren't over yet: The Titanosauridae where a large group mainly present in South America, and there is another group which is quite badly known, the Opisthcoelocaudidae.

This is quite a simple explanation, this site probably contains a lot of more detailed information on sauropods.
from da masta, age ?, ?, ?; May 17, 2002


"Does anyone have info on Alamosaurus"

Jeez, I am so glad that YOU don't think I'm evil Gianna.

Over the months I haven't been presenting myself so well I don't think...

Alamosaurus - I'll do some surfing, but shorthand I know the following: Alamosaurus, named by Gilmore in 1922, late cretacious titanosaurid sauropod, most titanosaurids, including I think Alamosaurus, had dermal oscicles, plates and knobs of bone embedded in their skin as protection, and Alamosaurs had a pair of little horns above each eye if I am not mistaken. About 21m long I think, about Apatosaur size.
from da masta, age ?, ?, ?; May 17, 2002


"BACK TO DINOSAURS.

How fast do you suppose Gallimimus ran?"

Well, I surfed a little bit and the general trend seems to be about 56km/h, (that's 35mp/h) and I would be inclined to agree with that. That's racehorse speed, by the way. Gallimimus had lots of big muscles around it's femur, and the tibialis anterior muscle which bends your lower leg back towards the femur seems to have been very powerful. And the metatarsals have been greatly strengthened to endure big forces.

Does anyone have info on Alamosaurus
from GIANNA, age ?, ?, ?, ?; May 16, 2002


"How fast do you suppose Gallimimus ran?"
Well, since by studying its footprints most people have come up with a top speed that would be slightly slower than that of an Ostritch for Dromiceiomimus, I'd assume that Gallimius would be slightly slpwer, since it's larger and heavier. But then again, it would have a longer stride than it's smaller relative, and like Ostritches and Emus, Ornithomimisaurs were probably "striding walkers" who's speed depended partly on the great length of their stride. But it's generally excepted that Dromiceiomimus was one of the fastest, if not the fastest dinosaur. So I would say somwhere in beetween 30-45 as a maximus speed for this dinosaur.

from Tim M., age ?, ?, ?; May 16, 2002


"So, I'm not going to ask you."

Oh; sorry. Tim asked me, though, before you posted.
from da masta, age ?, ?, ?; May 16, 2002


BACK TO DINOSAURS.

How fast do you suppose Gallimimus ran?
from Gianna, age ?, ?, ?, ?; May 15, 2002


Hi everyone!

I'm sorry I couldn- didn't, I mean, reply to all those posts, just I've bought "Return to Castle Wolfenstein" on friday, and I've been solidly playing ever since.

I told you I'm a harcore gamer!

And it's 9:04 now in England, and it's tuesday tommorow so I can't post now, either! I'll give you some of my political views later.
from da masta, age ?, ?, ?; May 13, 2002


"Yes .sometimes if there is a sub-species they do have a third part to there latin name."

Yes, like "-Equus-equus-caballus" and "-Equus-equus-prezwalskii"
from Tim M., age ?, ?, ?; May 13, 2002


"Interesting. I have a question. If there are different subspecies of a particular species, do they have three parts to their latin name? A genus, a species, and a third part, for that particular subspecies? I'm afraid no animals with three parts to their latin name spring to mind right now, but I've certainly seen many animals with that."

Yes .sometimes if there is a sub-species they do have a third part to there latin name.
from Tom G, age ?, ?, ?; May 11, 2002


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