tag:blogger.com,1999:blog-938713220377547711.post1155658234299045244..comments2024-02-25T12:26:48.318-08:00Comments on Metazoica: The One-Two Punch of ExtinctionsDee TimmyHutchFanhttp://www.blogger.com/profile/15186094514615567835noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-938713220377547711.post-46244698193006176912009-02-21T12:25:00.000-08:002009-02-21T12:25:00.000-08:00You are right about that. But it appears dinosaur ...You are right about that. But it appears dinosaur diversity was going down slightly between the Maastrictian and Campanian. However, when one thinks about it, it could be due to a change in climate due to the fluctuation of the seaway. The problem is we need more K-T boundary sites in order to prove it one way or the other.Metalraptorhttps://www.blogger.com/profile/17053007518293924808noreply@blogger.comtag:blogger.com,1999:blog-938713220377547711.post-49983934783454661102009-02-21T11:48:00.000-08:002009-02-21T11:48:00.000-08:00Metalraptor,We don't know for sure if diversity am...Metalraptor,<BR/><BR/>We don't know for sure if diversity among Mesozoic animals was in decline toward the end of Maastrichian, the best fossil sites we have for that time period are the Lance/Hell creek formations and...that is it basically.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-938713220377547711.post-77371301158139661262009-02-17T17:41:00.000-08:002009-02-17T17:41:00.000-08:00LOL! Well, it's not the first time. It's no proble...LOL! Well, it's not the first time. It's no problem, Metalraptor. I just find these articles. This one was dated today. So I cannot really guarantee the "freshness" of these articles.Dee TimmyHutchFanhttps://www.blogger.com/profile/15186094514615567835noreply@blogger.comtag:blogger.com,1999:blog-938713220377547711.post-67112975620558511282009-02-17T17:27:00.000-08:002009-02-17T17:27:00.000-08:00Sorry if it feels like you're out of the loop agai...Sorry if it feels like you're out of the loop again Metazoica, but this is something that paleontologists have known about for quite some time. Dinosaur diversity was decreased during the Maastrictian, the period right before the mass extinction. This was probably due to the Deccan traps, volcanic fields in India which caused the extinction of many dinosaur species, some of which could have survived the impact if they had not gone extinct beforehand (Oryctodromeus, for one). If the impact had not occured, it seems fairly likely that we would still be living on a dinosaur-dominated planet today. However, as we all know, the meteor came crashing down out of the sky and became the "straw that broke the camel's back", so to speak.Metalraptorhttps://www.blogger.com/profile/17053007518293924808noreply@blogger.com