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Dilophosaur Venom?
Topic Started: Aug 25 2011, 01:15 PM (3,216 Views)
trex841
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1. minus that, is probably what he means

2.
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Kamidio
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While they may not have stood in the rapids, I bet that they may have fed on fish swimming to spawn sites.
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dialforthedevil
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Beach combing still makes more sense. Dilophosaurus is perfect for it.
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bloom_boi
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Except from evidence, they didnt live by the sea...
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Russwallac
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Well, dilos did have fairly long arms for theropods... Perhaps they used their claws to grapple with prey and crushed its jugular with their teeth.
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naruacool723
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Woah, wait a minute...was their salmon or salmon like animals back then? If not, then fishing on breeding fish isn't a possibility.

I highly believe that it used the notch in the jaw to slide in an arterie, then cut it. That seems the best solution, but I can't shake off the feeling that it might have fished...
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FallingWhale
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Russwallac
Aug 31 2011, 09:04 AM
Well, dilos did have fairly long arms for theropods... Perhaps they used their claws to grapple with prey and crushed its jugular with their teeth.
Their arms couldn't rotate and they weren't long.

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Woah, wait a minute...was their salmon or salmon like animals back then? If not, then fishing on breeding fish isn't a possibility.
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Edited by FallingWhale, Aug 31 2011, 09:26 AM.
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naruacool723
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No...I'm 13, and my head isn't working very well. I haven't had any breakfast.

I better go have it. I'll be back.
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trex841
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the notch may have been used to hold slippery fish or amphibiens.
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Dracontes
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That Dilopho' could eat fish I won't argue. However, I won't say it was an exclusive fish-eater. As many a theropod it was probably a generalist when it came to small game.
According to its Wiki page Dilopho' was found in Arizona in Sinemurian (Early Jurassic) strata. Here are a few pertinent paleogeographic maps from http://cpgeosystems.com
http://cpgeosystems.com/namJ195.jpg
http://cpgeosystems.com/ColoPlatJurNav-Kayenta.jpg
The animal lived in a fairly arid environment which probably means it wouldn't pass up any opportunity to eat.

@Parasky: Carnivorous theropods didn't do a lot of manipulation of their food. They just ripped a nice bite sized chunk out and swallowed it whole. In fact, it's the same for hypercarnivorous mammals today: the lips get in the way of processing food. However as mammals tend to be less thrifty with water they still need a good seal around the mouth.
A big yawn would be as serviceable as a way to flash those chompers ;)

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Kamidio
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Dracontes
Aug 31 2011, 02:41 PM
Re: Piscivory
That Dilopho' could eat fish I won't argue. However, I won't say it was an exclusive fish-eater. As many a theropod it was probably a generalist when it came to small game.
According to its Wiki page Dilopho' was found in Arizona in Sinemurian (Early Jurassic) strata. Here are a few pertinent paleogeographic maps from http://cpgeosystems.com
http://cpgeosystems.com/namJ195.jpg
http://cpgeosystems.com/ColoPlatJurNav-Kayenta.jpg
The animal lived in a fairly arid environment which probably means it wouldn't pass up any opportunity to eat.

@Parasky: Carnivorous theropods didn't do a lot of manipulation of their food. They just ripped a nice bite sized chunk out and swallowed it whole. In fact, it's the same for hypercarnivorous mammals today: the lips get in the way of processing food. However as mammals tend to be less thrifty with water they still need a good seal around the mouth.
A big yawn would be as serviceable as a way to flash those chompers ;)

I'd say that yawning would actually be even more effective at flashing dem pearly whites.
Edited by Kamidio, Aug 31 2011, 02:49 PM.
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Forbiddenparadise64
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It could well have just clawed its victims to death, no need for venom. As for weak jaws, carnotaurus had tiny teeth, and yet it was still an efficient predator, so you don't need to be powerful in terms of bite to take down prey. Just look at us.
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Kamidio
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Aug 31 2011, 03:09 PM
It could well have just clawed its victims to death, no need for venom. As for weak jaws, carnotaurus had tiny teeth, and yet it was still an efficient predator, so you don't need to be powerful in terms of bite to take down prey. Just look at us.
We also have tool making abilities as well as chasing our prey to the ends of the Earth until it dies of exhaustion. So yeah, we sort of make up for that.

Dilo's arms weren't all that movable, being related to the albeiasaurs, who had no arms at all, commonly.
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lamna
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Woah, wait a minute...was their salmon or salmon like animals back then? If not, then fishing on breeding fish isn't a possibility.
There are many fish that use the same strategy as salmon, lay eggs in the relative safety of a river, let the offspring grow in the sea where there is more sea, and return to the river to feed. I'm sure it's a very old strategy, and there was probably something doing that in the Jurassic. Even if there was not, there are still plentiful fish in rivers. The Amazon is said to have more species of fish than in the Atlantic.
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Back on topic: many huge fish could make up for salmons. Coelacanths, lungfish and freshwater sharks were common across the Mesozoic, so they could provide sufficient food for whatever predator that took advantage of them.

But again, Dilophosaurus seems to have lived in arid environs, so I think it was more interested in capturing small prey. And, as said before, its jaws were not very weak.
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