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Stage ranges (was Re: Geographic Distribution of Deinonychosauria)

To: tholtz@geol.umd.edu
Subject: Stage ranges (was Re: Geographic Distribution of Deinonychosauria)
From: tholtz@geol.umd.edu
Date: Wed, 29 Dec 2010 16:44:10 -0500 (EST)
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Cc: david.marjanovic@gmx.at, "DML" <dinosaur@usc.edu>
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>>>  True, but the stages don't last so long that one cannot infer
>>>  distributions of nonvolant taxa fairly well from knowledge of the
>>>  topographical layout (particularly if taking into account
>>>  phylogeny).
>>
>> Maastrichtian: 5 Ma, Campanian: 13 Ma...
>>
>> Many stages in the Jurassic are estimated to be about 4 Ma long, which
>> is also the confidence interval on their start and end dates.

For all interested, the ICS has a published database of stage bases
(GSSPs) at:
https://engineering.purdue.edu/Stratigraphy/gssp/index.php?parentid=all

References:
- Re: Geographic Distribution of Deinonychosauria
  - From: evelyn sobielski <koreke77@yahoo.de>
- Re: Geographic Distribution of Deinonychosauria
  - From: David Marjanovic <david.marjanovic@gmx.at>
- Re: Geographic Distribution of Deinonychosauria
  - From: tholtz@geol.umd.edu

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