Talk:Ordovician

From Wikipedia, the free encyclopedia

	Earth sciences Portal Ordovician is part of WikiProject Geology, an attempt at creating a standardized, informative, comprehensive and easy-to-use geology resource. If you would like to participate, you can choose to edit this article, or visit the project page for more information.
B	This article has been rated as B-class on the quality scale.
High	This article has been rated as high-importance on the importance scale.
	This page has been marked as needing immediate attention.

Ordovician is included in the 2007 Wikipedia for Schools, or is a candidate for inclusion in future versions. Please maintain high quality standards, and make an extra effort to include free images, because non-free images cannot be used on the CDs.

[edit] Ma vs. mya

In these era pages I have seen "million years ago" abbreviated as Ma and as mya. Which one is the standard?

If the Mya (unit) article is to be believed, Ma has replaced the older Mya in scientific literature. Because of that I think we should use only Ma.--Jyril 20:23, 26 February 2006 (UTC)

There should be an agreed on convention regarding this notation somewhere, as I know it's been brought up before. I'd like to know as well, so if I find it, I'll leave a note here. --DanielCD 22:08, 26 February 2006 (UTC)

Ma is certainly the standard in professional geologic circles. Cheers Geologyguy 23:54, 10 March 2007 (UTC)

I vote we go with that then. --DanielCD 01:46, 11 March 2007 (UTC)

[edit] Adaptive radiation

Added information on Ordovician adaptive radiation.Erimus 23:11, 10 March 2007 (UTC)