Hydrochara

Udo Schmidt from Deutschland · CC BY-SA 2.0 · via Wikidata/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
- HydrophiliniPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At least 40 million years on record.
The record covers at least 41.03 Mya to 129 ka. No occurrence read is dated outside 48.07 Mya to 11.7 ka.
18 occurrences of Hydrochara 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
18 occurrences- Eocene22%
- Miocene22%
- Pliocene11%
- Pleistocene44%
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
9 formations
- Upper Freshwater-Molasse Formation3
- Bouldnor Formation · Solent Group3
- Hirabaru Formation2
- Tsubusagawa Formation2
- Thermalsinterkalk Formation1
- Ookui Formation1
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The named rock units Hydrochara has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Hydrochara and its relatives
PleistoceneWhere Hydrochara and its relatives were recorded in the Pleistocene.
Found in the same rock
1,060 taxa- Staphylinidae8 sites
- Carabidae7 sites
- Lepidoptera7 sites
- Coleoptera6 sites
- Curculionidae6 sites
- Donacia5 sites
- Hydrophilidae5 sites
- Agabus4 sites
- Coelostoma4 sites
- Donaciinae4 sites
- Dytiscidae4 sites
- Gyrinus4 sites
- Ichneumonidae4 sites
- Ilybius4 sites
- Oodini4 sites
- Plateumaris4 sites
- Aeolothrips jarzembowskii3 sites
- Aeshnidae3 sites
- Anglogomphaeschna eocenica3 sites
- Anisoptera3 sites
- Aphidoidea3 sites
- Aphodius3 sites
- Beraeodes vectensis3 sites
- Berosus barclayi3 sites
The Paleobiology Database records 15 sites for Hydrochara, 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
11 references- The beetle (Coleoptera) fauna of the Insect Limestone (late Eocene), Isle of Wight, southern England3
- Paleogeography of the lower Volga at the end of Atelian time based on entomological and botanical data3
- Middle Pleistocene fossil insects from the Hirabaru Formation of Kitsuki City, Oita Prefecture, Kyushu, Japan2
- Fossil insects and their paleoenvironments of the Pliocene Tsubusagawa Formation in Ajimu Basin, Oita Prefecture, Kyushu, Japan2
- Heer, 18472
- Diversification of the greater hydrophilines clade of giant water scavenger beetles dated back to the Middle Eocene (Coleoptera: Hydrophilidae: Hydrophilina)1
- Marine Isotope Stage 9 environments of fluvial deposits at Hackney, north London, UK1
- Late Pleistocene insects from the Mizozono Formation in Yoshimatsu-cho, Kagoshima Prefecture, Japan1
- Early Pleistocene ground beetles (Coleoptera: Carabidae) from the Ookui Formation in Nagano Prefecture, central Japan, and their biogeographical and paleoenvironmental significance1
- Die Insektenfauna des Böttinger Marmors1
- Beiträge zur Insektenfauna Oeningens: Coleoptera. Geodephagen, Hydrocanthariden, Gyriniden, Brachelytren, Clavicornen, Lamellicornen und Buprestiden1
Each of the 18 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 Hydrochara
- Source
- Wikidata/Commons
- Credit
- Udo Schmidt from Deutschland
- Licence
- CC BY-SA 2.0
- Commercial use
- the licence allows it
No 3D scan of Hydrochara was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHydrophilini through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Berthold 1827