Agerostrea

Agerostrea is an extinct genus of fossil oysters, marine bivalve molluscs in the family Ostreidae, the true oysters. It is present in the Maastrichtian, the upper stage of the Late Cretaceous epoch, from 72.1 to 66 million years ago.

Agerostrea

H. Zell · 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
CurvostreiniPBDB
Diet
suspension feederPBDB, for Ostreida
Life habit
epifaunalPBDB, for Ostreida
Motility
stationary, attachedPBDB, for Ostreida
Vision
blindPBDB, for Bivalvia
Environment
marine,brackishPBDB, for Ostreida

Time the record covers

At least 66 million years on record.

The record covers at least 72.2 Mya to 5.333 Mya. No occurrence read is dated outside 100.5 Mya to 3.6 Mya.

Early Cretaceous — about 0 of 180 occurrencesLate Cretaceous — about 179 of 180 occurrencesLate CretaceousPaleocene — about 0 of 180 occurrencesEocene — about 0 of 180 occurrencesOligocene — about 0 of 180 occurrencesMiocene — about 0 of 180 occurrencesPliocene — about 1 of 180 occurrencesPleistocene — about 0 of 180 occurrences102–99 Mya — about 0.1 occurrences99–96 Mya — about 0.2 occurrences96–92 Mya — about 0.2 occurrences92–89 Mya — about 0.2 occurrences89–86 Mya — about 0.2 occurrences86–82 Mya — about 7 occurrences82–79 Mya — about 18 occurrences79–76 Mya — about 18 occurrences76–72 Mya — about 18 occurrences72–69 Mya — about 63 occurrences69–65 Mya — about 53 occurrences8.4–5.0 Mya — about 0.2 occurrences5.0–1.7 Mya — about 0.8 occurrences72.2 Mya5.333 Mya102 Mya2 Mya

180 occurrences of Agerostrea on record, most of them in the Late Cretaceous. 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

180 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

34 formations

Marshalltown — 39.78°N, 75.44°WMarshalltown — 39.55°N, 75.70°WMarshalltown — 39.55°N, 75.65°WMount Laurel Sand — 39.55°N, 75.65°WMerchantville — 39.54°N, 75.72°WMerchantville — 40.14°N, 74.72°WRipley — 34.25°N, 90.00°WRipley — 35.32°N, 88.42°WRipley — 35.29°N, 88.60°WRipley — 32.64°N, 88.17°WRipley — 32.15°N, 87.39°WPeedee — 35.77°N, 78.64°WPeedee — 34.48°N, 78.41°WPrairie Bluff — 32.57°N, 88.20°WPrairie Bluff — 32.13°N, 87.40°WPrairie Bluff — 32.04°N, 87.26°WPrairie Bluff — 32.43°N, 88.04°WEnglishtown — 39.55°N, 75.65°WEnglishtown — 39.55°N, 75.70°WNavesink — 39.76°N, 75.13°WNavesink — 40.31°N, 74.22°WNavesink — 40.36°N, 74.12°WMount Laurel — 40.12°N, 74.55°WMount Laurel — 40.38°N, 74.21°WMount Laurel — 39.77°N, 75.15°WDemopolis — 35.23°N, 88.40°WDemopolis — 32.56°N, 87.79°WDemopolis — 34.58°N, 88.63°WCoffee Sand — 34.45°N, 88.58°WMaastricht — 51.00°N, 6.00°EDakhla — 25.00°N, 30.75°EDakhla — 29.99°N, 26.54°ECorsicana Marl — 31.30°N, 96.90°WCorsicana Marl — 29.57°N, 97.96°WNacatoch Sand — 32.59°N, 96.31°WNeylandville Marl — 33.37°N, 95.69°WSimsima — 24.87°N, 55.95°EEginsai — 52.44°N, 64.61°ECorsicana — 31.13°N, 96.82°WKemp Clay — 29.42°N, 98.49°WOpoka — 51.13°N, 21.77°EGreensand — 51.33°N, 21.97°EPlaya Grande — 10.00°N, 64.00°WWoodbury — 39.91°N, 75.03°W

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The named rock units Agerostrea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 further formations hold fewer occurrences each and are not listed. 81 occurrences have no formation on record, which is common for older literature.

Agerostrea and its relatives

Late Cretaceous

Where Agerostrea and its relatives were recorded in the Late Cretaceous.

Found in the same rock

1,295 taxa

The Paleobiology Database records 137 sites for Agerostrea, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

39 references

Each of the 180 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. 27 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 Agerostrea

Credit
H. Zell
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Agerostrea was found in Sketchfab.

Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.

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 itCurvostreini through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Vialov 1936)