Cercyon
Cercyon is a genus of water scavenger beetles in the family Hydrophilidae. There are at least 50 described species in Cercyon.

Siga · CC BY-SA 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- MegasterniniPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At least 47 million years on record.
The record covers at least 48.07 Mya to 129 ka. No occurrence read is dated outside 56 Mya to 11.7 ka.
33 occurrences of Cercyon on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
33 occurrences- Eocene3%
- Pleistocene97%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
3 formations
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The named rock units Cercyon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.
Cercyon and its relatives
PleistoceneWhere Cercyon and its relatives were recorded in the Pleistocene.
Found in the same rock
770 taxa- Stenus18 sites
- Aleocharinae15 sites
- Aphodius15 sites
- Dyschiriodes globosus13 sites
- Hydraena11 sites
- Rhynchaenus quercus11 sites
- Anotylus rugosus10 sites
- Bryaxis10 sites
- Dryops10 sites
- Helophorus10 sites
- Limnius volckmari10 sites
- Oulimnius troglodytes10 sites
- Oulimnius tuberculatus10 sites
- Apion9 sites
- Bagous9 sites
- Carpelimus9 sites
- Esolus parallelepipedus9 sites
- Gyrinus9 sites
- Helodidae9 sites
- Ochthebius minimus9 sites
- Pelochares versicolor9 sites
- Bledius8 sites
- Elmis aenea8 sites
- Hydrobius fuscipes8 sites
The Paleobiology Database records 24 sites for Cercyon, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
9 references- Marine Isotope Stage 9 environments of fluvial deposits at Hackney, north London, UK13
- Late Devensian river deposits beneath the floodplain terrace of the River Thames at Abingdon, Berkshire, England6
- A Late Pleistocene fauna and flora from Upton Warren, Worcestershire4
- The paleoenvironment of the Olympia beds based on fossil beetles from Discovery Park, Seattle, Washington, U.S.A.2
- Middle Pleistocene deposits at Frog Hall Pit, Stretton-on-Dunsmore, Warwickshire, English Midlands, and their implications for the age of the type Wolstonian2
- Paleogeography of the lower Volga at the end of Atelian time based on entomological and botanical data2
- The fossil Coleoptera of the Two Creeks Forest Bed, Wisconsin2
- Late Cenozoic insects of northern Eurasia1
- Appendix A. The fossil insects collected in 1877, by Mr. G.M. Dawson, in the interior of British Columbia1
Each of the 33 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Cercyon
- Source
- Wikipedia/Commons
- Credit
- Siga
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMegasternini through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Leach 1817