A new type has been added to the two lagerstätten used now. A "conservation lagerstätte" features exceptional preservation without much diversity and a "concentration lagerstätte" has extraordinary diversity without notable preservation quality. To recognize sites that have very good but maybe not exceptional preservation as well as a level of diversity that exceeds the conservation type we now can call some sites a "liberation lagerstätte."
Anyone like myself with an interest in the Finis Shale member of the Graham Formation found in Jack County Texas will not be surprised to hear it is being recognized as special. Another formation in Texas as well as some in the deep south of the U.S. and others abroad are included in the list from the article presented at the 11th North American Paleontological Convention this June.
Roden et al2019 NAPC.pdf