Coelostoma
Coelostoma is a genus of beetles belonging to the family Hydrophilidae. The genus was first described by Brullé in 1835. The genus has cosmopolitan distribution, with 111 described species, representing one of the most diverse genera of Hydrophilidae.

Udo Schmidt from Deutschland · CC BY-SA 2.0 · 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
- CoelostomatiniPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At least 5.2 million years on record.
The record covers at least 5.333 Mya to 129 ka. No occurrence read is dated outside 11.63 Mya to 11.7 ka.
21 occurrences of Coelostoma 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
21 occurrences- Miocene5%
- Pliocene29%
- Pleistocene67%
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
8 formations
- Tsubusagawa Formation6
- Highbury Silts and Sands Formation6
- Tsumori Formation2
- Mizozono Formation2
- Bushi Formation1
- Ookui Formation1
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The named rock units Coelostoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Coelostoma and its relatives
PleistoceneWhere Coelostoma and its relatives were recorded in the Pleistocene.
Found in the same rock
323 taxa- Carabidae12 sites
- Aphodius10 sites
- Coleoptera10 sites
- Onthophagus10 sites
- Curculionidae9 sites
- Donaciinae9 sites
- Ilybius9 sites
- Staphylinidae8 sites
- Donacia7 sites
- Gyrinus7 sites
- Oodini7 sites
- Stenus7 sites
- Aleocharinae6 sites
- Bryaxis6 sites
- Carpelimus6 sites
- Dyschiriodes globosus6 sites
- Hydraena6 sites
- Lepidoptera6 sites
- Pelochares versicolor6 sites
- Plateumaris6 sites
- Platystethus cornutus6 sites
- Rhynchaenus quercus6 sites
- Agabus5 sites
- Anthonomus5 sites
The Paleobiology Database records 19 sites for Coelostoma, 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
10 references- Marine Isotope Stage 9 environments of fluvial deposits at Hackney, north London, UK6
- Fossil insects and their paleoenvironments of the Pliocene Tsubusagawa Formation in Ajimu Basin, Oita Prefecture, Kyushu, Japan6
- Late Pleistocene insects from the Mizozono Formation in Yoshimatsu-cho, Kagoshima Prefecture, Japan2
- Middle Pleistocene fossil insects from the Nogami Formation of Kokonoe, Oita Prefecture, Kyushu, Japan1
- Late Cenozoic insects of northern Eurasia1
- Middle Pleistocene fossil insects from the Hirabaru Formation of Kitsuki City, Oita Prefecture, Kyushu, Japan1
- Middle Pleistocene fossil insects from the Tsumori Formation of Mashiki-machi,Kumamoto Prefecture,Japan (Part 2)1
- Middle Pleistocene insects from the Tsumori Formation in Mashiki-machi, Kumamoto Prefecture, Japan1
- Early Pleistocene ground beetles (Coleoptera: Carabidae) from the Ookui Formation in Nagano Prefecture, central Japan, and their biogeographical and paleoenvironmental significance1
- Insect fossil assemblage and paleoenvironments from the Early Pleistocene Bushi Formation in Saitama Prefecture, Japan1
Each of the 21 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 Coelostoma
- Source
- Wikipedia/Commons
- Credit
- Udo Schmidt from Deutschland
- Licence
- CC BY-SA 2.0
- Commercial use
- the licence allows it
No 3D scan of Coelostoma 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.
The description on this site
- Source
- Wikipedia, “Coelostoma”
- 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 itCoelostomatini through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Brullé 1835