speshall mareens Posted January 20, 2007 #1 Share Posted January 20, 2007 for a long time paleantologists have debated over the point of crests on dinosaurs and even living animals as well as using them to support there argument. i just wanna no what others think. i'll be back in a little, i wanna go make fun of the idiots who believe in aliens and big foot. or not whatever works. Link to comment Share on other sites More sharing options...
Cryptoman Posted January 20, 2007 #2 Share Posted January 20, 2007 I believe those were used to attract mates, but didn't they also debate if it produced poison as well? Link to comment Share on other sites More sharing options...
speshall mareens Posted January 20, 2007 Author #3 Share Posted January 20, 2007 doubt it, those movies are not quite acureate. but i thought i heard something about it. as to the frill, no way of proving that. still, destroy all humas is an awsome game( refering to pic). yah mating is the most plausible answer as the crests are fragile, but there is still heat regulation and territory. the same things with spined animals really. Link to comment Share on other sites More sharing options...
Cryptoman Posted January 20, 2007 #4 Share Posted January 20, 2007 doubt it, those movies are not quite acureate. but i thought i heard something about it. as to the frill, no way of proving that. still, destroy all humas is an awsome game( refering to pic). yah mating is the most plausible answer as the crests are fragile, but there is still heat regulation and territory. the same things with spined animals really. thanks for the compliment, but I'm not referring to Jurassic Park. They said they found two weird holes behind the eye holes in the skull that possibly held venom sacs. Link to comment Share on other sites More sharing options...
speshall mareens Posted January 20, 2007 Author #5 Share Posted January 20, 2007 entirely possible, but it all really depends on when the first venom evovled. they could be for tears. or an extraordinary fragile part of the skull that was broken. Link to comment Share on other sites More sharing options...
Cryptoman Posted January 20, 2007 #6 Share Posted January 20, 2007 That would be an intereting subject to investigate, when did venom evolve in reptiles? Link to comment Share on other sites More sharing options...
Cryptoman Posted January 20, 2007 #7 Share Posted January 20, 2007 Oh, I almost forgot. Welcome to Unexplained Mysteries Speshall Mareens! Try not to make "too" much fun of the bigfoot and alien believers. Link to comment Share on other sites More sharing options...
frogfish Posted January 20, 2007 #8 Share Posted January 20, 2007 Dilophosaurus did not make poison. In no way to our knowledge were they venemous. The crest, which is also present in Lillienasaurus and Crylophosaurus was probably used to attract mates. See this link for the evolution of snake venom: http://mbe.oxfordjournals.org/cgi/content/full/21/5/870 Link to comment Share on other sites More sharing options...
Cryptoman Posted January 20, 2007 #9 Share Posted January 20, 2007 Thanks for the link Frogfish. Link to comment Share on other sites More sharing options...
BurnSide Posted January 20, 2007 #10 Share Posted January 20, 2007 Like the Lambeosaurus, it was most likely used for distinguishing sex and age. More often than not, juveniles of species with crests are usually crestless, and they slowly grow the crest in with passing years. It could have even been used as a status thing. Several species had crests on their heads that were used for communication by blowing air through it like a horn, although I doubt that was the usage of the Dilophosaurus crest. And yes, the poison from JP was created by the author of the book, while the size of the creature in the movie was severly reduced as well. Movies play little role in fact. Link to comment Share on other sites More sharing options...
frogfish Posted January 20, 2007 #11 Share Posted January 20, 2007 Several species had crests on their heads that were used for communication by blowing air through it like a horn Yup, such as Saurolophus and Parasaurolophus. Lambeosaurus and Corythosaurus did not have hollow crests. Dilophosaurus's crest is not hollow either, and was probably used as a display. Link to comment Share on other sites More sharing options...
Cryptoman Posted January 20, 2007 #12 Share Posted January 20, 2007 Maybe the frills wre covered in skin and that area of skin had pigments like a chameleon skins. It could've been used to distiunguish there moods. Link to comment Share on other sites More sharing options...
frogfish Posted January 20, 2007 #13 Share Posted January 20, 2007 Maybe the frills wre covered in skin and that area of skin had pigments like a chameleon skins. It could've been used to distiunguish there moods. Dilophosaurus never had frills, and we have no idea how the skin looked. For all we know, they could of been drab brown or hot pink (although very unlikley ). Link to comment Share on other sites More sharing options...
speshall mareens Posted January 21, 2007 Author #14 Share Posted January 21, 2007 Like the Lambeosaurus, it was most likely used for distinguishing sex and age. More often than not, juveniles of species with crests are usually crestless, and they slowly grow the crest in with passing years. It could have even been used as a status thing. Several species had crests on their heads that were used for communication by blowing air through it like a horn, although I doubt that was the usage of the Dilophosaurus crest. And yes, the poison from JP was created by the author of the book, while the size of the creature in the movie was severly reduced as well. Movies play little role in fact. like deer and elk and moose., there crests had to be for display they were to fragile for anything else Link to comment Share on other sites More sharing options...
Cryptoman Posted January 21, 2007 #15 Share Posted January 21, 2007 Dilophosaurus never had frills, and we have no idea how the skin looked. For all we know, they could of been drab brown or hot pink (although very unlikley ). I'm sorry, I meant the frills on the tops of its head. I don't want to sound retarded because I know the difference between the compltetely bogus (but cool) dilophosaurus from JP and the actual 20 foot predator. Link to comment Share on other sites More sharing options...
speshall mareens Posted January 21, 2007 Author #16 Share Posted January 21, 2007 Dilophosaurus did not make poison. In no way to our knowledge were they venemous. The crest, which is also present in Lillienasaurus and Crylophosaurus was probably used to attract mates. See this link for the evolution of snake venom: http://mbe.oxfordjournals.org/cgi/content/full/21/5/870 we more or less ment evolution of venom in general, ti was before the dinosaurs actually, i just remambered. it was the gie=ant spiders during the cambrien. or whenever all the coal came from. Link to comment Share on other sites More sharing options...
frogfish Posted January 21, 2007 #17 Share Posted January 21, 2007 Venom probably evolved very early. Hmmm, I should research that. I wonder if it evolved during the Devonian or before.. Link to comment Share on other sites More sharing options...
speshall mareens Posted January 21, 2007 Author #18 Share Posted January 21, 2007 probably with the giant sea scopins or the jelly fish, but etleast the scorpians. Link to comment Share on other sites More sharing options...
frogfish Posted January 21, 2007 #19 Share Posted January 21, 2007 Sea scorpions did not even have "stingers"... And jellyfish don;t have venom. They have nematocysts Link to comment Share on other sites More sharing options...
speshall mareens Posted January 22, 2007 Author #20 Share Posted January 22, 2007 they did have stingers, but hey probably just used it for hitting they're prey no vonom injected. just beatin the crap out of it. so no i guess they weren't "stingers". Link to comment Share on other sites More sharing options...
frogfish Posted January 22, 2007 #21 Share Posted January 22, 2007 Sea Scorpion They just have paddle/club tails. Link to comment Share on other sites More sharing options...
Pax Unum Posted January 22, 2007 #22 Share Posted January 22, 2007 They just have paddle/club tails. Are you sure of that? I read some species had a spiked tail, that may have been used to inject venom, like in modern scorpions... Eurypterid AKA Sea Scorpion LINK-> Eurypterid Link to comment Share on other sites More sharing options...
Mattshark Posted January 22, 2007 #23 Share Posted January 22, 2007 I believe Brontoscorpio had a venomous sting. Frogfish jellyfish nematocysts inject venom when they fire. I'm pretty sure every spider has venom too. But I would go with Cnidarians such as jellyfish, anemones and corals as being the first developers of venoms. (though some bacteria use something similar I am not sure it is truely venom). Link to comment Share on other sites More sharing options...
speshall mareens Posted January 23, 2007 Author #24 Share Posted January 23, 2007 yes, all spiders have venom. venom is really old, its been around since complex organisms evolved still considering the amount of dinosaur diversity, you would think that atleast one would some sort of venom. most likely like that of the komodo dragon. carnosaurs could have used ot to take down large surapods. if you can't keep up with your prey, you must adapt. however this is just a speculation so fell free to cricize. Link to comment Share on other sites More sharing options...
Cryptoman Posted January 23, 2007 #25 Share Posted January 23, 2007 yes, all spiders have venom. venom is really old, its been around since complex organisms evolved still considering the amount of dinosaur diversity, you would think that atleast one would some sort of venom. most likely like that of the komodo dragon. carnosaurs could have used ot to take down large surapods. if you can't keep up with your prey, you must adapt. however this is just a speculation so fell free to cricize. you might be right actually, what if there is an undiscovered species that somehow perfected the production of venom. Maybe it would be a small compsagnuthus creature that spat venom. or a big burly carnosaur that used bacterua like the komodo dragon, or even like a gila monster Link to comment Share on other sites More sharing options...
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