Regular readers will remember the earlier updated version of the Bakken relative to other continuous oil reservoirs in the United States. The green dots were sized relative to their estimated recoverable bbls of oil.
The individual who provided that updated version, to make things fit, had to use very, very small dots for some of the smaller fields.
Re-sizing those small dots to something we could actually see, this is the new version. I have to admit: I like this version even more.
This is probably why the USGS did not use the relative sizing; and, why the USGS was resistant to increasing the mean estimate to a number greater than 7.38: