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No Meteor after all?
Topic Started: Apr 19 2016, 02:40 PM (541 Views)
BossMan, Jake
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Son of God

http://arstechnica.com/science/2016/04/dinosaurs-werent-wiped-out-by-that-meteorite-after-all/

This is interesting and does drive home some facts. The meteor did them in but they were on the decline considering Lambeosaurinae, Chasmosaurinae, and Nodosaurinae were becoming rare if not extinct in many parts of the world.

I'm more then positive though that this info was a known already but for those who have no idea
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CyborgIguana
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Doesn't mean they couldn't have survived if it weren't for the asteroid. A lot of dinosaur groups went into decline/extinction at the end of the Jurassic too.
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Incinerox
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Āeksiot Zaldrīzoti

BossMan, Jake
Apr 19 2016, 02:40 PM
http://arstechnica.com/science/2016/04/dinosaurs-werent-wiped-out-by-that-meteorite-after-all/

This is interesting and does drive home some facts. The meteor did them in but they were on the decline considering Lambeosaurinae, Chasmosaurinae, and Nodosaurinae were becoming rare if not extinct in many parts of the world.

I'm more then positive though that this info was a known already but for those who have no idea
The three groups you mentioned were outright displaced by related groups - chasmosaurinae, saurolophinae and ankylosaurinae.
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BossMan, Jake
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Hey woah now I didn't say they were going to be extinct right away I'm just saying that at this rate they could've been extinct later on at some point
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Even
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And at least for lambeosaurines and nodosaurines (and depending on when Sinoceratops live, centrosaurines), that phenomenon is distinctively Laramidian
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CyborgIguana
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Turns out those groups didn't even disappear completely in Laramidia. We have Pachyrhinosaurus and Denversaurus, and I'm pretty sure there's an undescribed lambeosaurine from Hell Creek as well IIRC.
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TheNotFakeDK
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CyborgIguana
Apr 24 2016, 09:23 AM
Turns out those groups didn't even disappear completely in Laramidia. We have Pachyrhinosaurus and Denversaurus, and I'm pretty sure there's an undescribed lambeosaurine from Hell Creek as well IIRC.
Pachyrhinosaurus perotorum may have been Maastrichtian in age, but it's only dated to around 70-69 million years, still at least three million years away from the end-Maastrichtian. Centrosaurinae could still have possibly kicked the bucket in Laramidia by the time the asteroid struck.
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the dark phoenix
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King of wonderlandia

The Hell creek lambeosaur is possibly a parasaurolophine. We have Charonosaurus and apparently many European and asian cohorts so they were diverse and around even till the very end.

This Extinction paper may help some speculative biologists with their spec projects.
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