Average rating: | Rated 4.5 of 5. |
Level of importance: | Rated 3 of 5. |
Level of validity: | Rated 5 of 5. |
Level of completeness: | Rated 5 of 5. |
Level of comprehensibility: | Rated 4 of 5. |
Competing interests: | None |
At first sight this may not appear like a very exciting study. However, it is obviously important for those working with fossil beetles and the insect fauna of this period. The authors provide new and very good photos of the fossils and clear line drawings.
Based on the observations one of the species is correctly assigned to Dytiscidae and the genus Copelatus. I also agree with the treatment of the others as Polyphaga incertae sedis. The authors point out correctly that a placement in Hydrophilidae is not sufficiently supported.
The language could be more elegant but is clear enough for a scientific study in insect palaeontology.