Hydrobia

Hydrobia is a genus of very small brackish water snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae.

Hydrobia

Erik Veldhuis · 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
HydrobiidaePBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda
Environment
brackish,freshwaterPBDB, for Hydrobiidae

Time the record covers

At least 145 million years on record.

The record covers at least 145.06 Mya to 11.7 ka. No occurrence read is dated outside 149.2 Mya to 0 Mya.

Late Jurassic — about 1 of 192 occurrencesEarly Cretaceous — about 2 of 192 occurrencesEarly CretaceousLate Cretaceous — about 5 of 192 occurrencesLate CretaceousPaleocene — about 25 of 192 occurrencesEocene — about 25 of 192 occurrencesEoceneOligocene — about 31 of 192 occurrencesMiocene — about 51 of 192 occurrencesMiocenePliocene — about 9 of 192 occurrencesPleistocene — about 42 of 192 occurrences152–147 Mya — about 0.5 occurrences147–142 Mya — about 0.7 occurrences142–137 Mya — about 2 occurrences86–81 Mya — about 0.1 occurrences81–76 Mya — about 0.3 occurrences76–71 Mya — about 1 occurrence71–66 Mya — about 4 occurrences66–61 Mya — about 15 occurrences61–56 Mya — about 10 occurrences56–51 Mya — about 2 occurrences51–46 Mya — about 3 occurrences46–41 Mya — about 6 occurrences41–36 Mya — about 9 occurrences36–30 Mya — about 19 occurrences30–25 Mya — about 15 occurrences25–20 Mya — about 7 occurrences20–15 Mya — about 10 occurrences15–10 Mya — about 26 occurrences10–5.1 Mya — about 11 occurrences5.1–0 Mya — about 51 occurrences145.06 Mya11.7 ka152 Mya0 Mya

192 occurrences of Hydrobia on record, most of them in the Miocene. 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

192 occurrences

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

55 formations

Norwich Crag — 52.58°N, 1.38°ERavenscrag — 49.60°N, 108.70°WRavenscrag — 49.70°N, 109.00°WRavenscrag — 49.13°N, 104.88°WRavenscrag — 49.70°N, 110.50°WBorgloon — 50.80°N, 5.33°EBorgloon — 50.82°N, 5.46°EBorgloon — 51.00°N, 4.50°EFalun de Jeurs — 48.48°N, 2.23°EFaluns de la Touraine — 47.40°N, 1.23°EFaluns de la Touraine — 47.39°N, 1.26°EKirchberg — 48.60°N, 10.72°EKirchberg — 48.67°N, 10.98°EKirchberg — 48.45°N, 10.27°EKirchberg — 48.68°N, 10.82°EKirchberg — 48.57°N, 10.42°ECalcaire de Mons — 50.45°N, 3.93°EOsborne Beds — 50.71°N, 1.10°WOsborne Beds — 50.70°N, 1.51°WSable de Vauroux-Saint-Antoine — 48.43°N, 2.15°ESable de Vauroux-Saint-Antoine — 48.50°N, 2.25°EBianqiao — 35.44°N, 117.85°EWoolwich and Reading — 51.52°N, 0.08°WFalun de Pierrefitte — 48.50°N, 2.25°EUpper Headon Beds — 50.63°N, 1.55°WHempstead — 50.72°N, 1.45°WBembridge Limestone — 50.67°N, 1.08°WCaloosahatchee — 26.89°N, 82.01°WConglomerat de Pierrefitte — 48.50°N, 2.25°EFalun d'Ormoy — 48.40°N, 2.15°EVistula — 53.94°N, 19.33°EFalun de Saucats — 44.66°N, 0.57°WKaranga — 36.00°N, 51.18°EKaranga — 36.63°N, 52.20°EWeybourne Crag — 52.90°N, 1.37°ESkalica — 48.48°N, 16.65°EScollard — 52.33°N, 113.12°W

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The named rock units Hydrobia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 31 further formations hold fewer occurrences each and are not listed. 81 occurrences have no formation on record, which is common for older literature.

Hydrobia and its relatives

Miocene

Where Hydrobia and its relatives were recorded in the Miocene.

Found in the same rock

1,996 taxa

The Paleobiology Database records 115 sites for Hydrobia, 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

67 references

Each of the 192 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. 55 further references are not listed. 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 Hydrobia

Credit
Erik Veldhuis
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 itHydrobiidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hartmann 1821