Robuta

https://jm.copernicus.org/articles/7/39/1988/ JM - The use of sodium polytungstate for conodont separations Abstract. Most conodont workers use heavy liquids that are carcinogenic or toxic in other ways. The use of the non-toxic water-based liquid sodium... sodium polytungstateuseconodontseparations https://palass.org/publications/palaeontology-journal/archive/21/4/article_pp723-758 Middle and Upper Ordovician conodont and graptolite biostratigraphy of the Marathon, Texas... upper ordovicianof themiddleconodontgraptolite https://scholarworks.uni.edu/pias/vol71/iss1/49/ "Upper Devonian and Lower Mississippian Conodont faunas, north-central " by Wayne I. Anderson Conodonts are rare in the Shell Rock Formation, but they support the previous assignment of this formation to the lower part of the Upper Devonian. Conodont... upper devonianlower mississippiannorth centralconodontfaunas