Ostrea angasi

The southern mud oyster, Australian flat oyster, native flat oyster, native mud oyster, or angasi oyster, is endemic to southern Australia, ranging from Western Australia to southeast New South Wales and around Tasmania. Ostrea angasi superficially resembles Ostrea edulis and both species may be referred to with the name "flat oyster". However, the two species do not occur naturally in the same geographic distribution.

Ostrea angasi

Sowerby, 1871 · CC0 · 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
OstreaPBDB
Diet
suspension feederPBDB, for Ostreidae
Life habit
epifaunalPBDB, for Ostreidae
Motility
stationary, attachedPBDB, for Ostreidae
Vision
blindPBDB, for Bivalvia
Environment
hypersaline,marine,brackishPBDB, for Ostreidae

Time the record covers

At least 2.5 million years on record.

The record covers at least 2.58 Mya to 11.7 ka. No occurrence read is dated outside 3.6 Mya to 0 Mya.

Pliocene — about 3 of 6 occurrencesPliocenePleistocene — about 2 of 6 occurrencesPleistoceneHolocene — about 1 of 6 occurrences3.7–3.6 Mya — about 0.1 occurrences3.6–3.4 Mya — about 0.4 occurrences3.4–3.3 Mya — about 0.4 occurrences3.3–3.1 Mya — about 0.4 occurrences3.1–3.0 Mya — about 0.4 occurrences3.0–2.9 Mya — about 0.4 occurrences2.9–2.7 Mya — about 0.4 occurrences2.7–2.6 Mya — about 0.4 occurrences2.6–2.5 Mya — about 0.1 occurrences2.5–2.3 Mya — about 0.1 occurrences2.3–2.2 Mya — about 0.1 occurrences2.2–2.0 Mya — about 0.1 occurrences2.0–1.9 Mya — about 0.1 occurrences1.9–1.8 Mya — about 0.1 occurrences1.8–1.6 Mya — about 0.1 occurrences1.6–1.5 Mya — about 0.1 occurrences1.5–1.4 Mya — about 0.1 occurrences1.4–1.2 Mya — about 0.1 occurrences1.2–1.1 Mya — about 0.1 occurrences1.1–957 ka Mya — about 0.1 occurrences957 ka–820 ka Mya — about 0.1 occurrences820 ka–683 ka Mya — about 0.0 occurrences137 ka–0 Mya — about 2 occurrences2.58 Mya11.7 ka4.1 Mya0 Mya

6 occurrences of Ostrea angasi on record. 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

6 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

3 formations

Norwest Bend — 34.75°S, 139.55°ENorwest Bend — 34.28°S, 139.63°ENorwest Bend — 34.18°S, 140.20°ETamala Limestone — 32.04°S, 115.76°EPoint Allen — 36.00°S, 137.17°E

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The named rock units Ostrea angasi 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.

Found in the same rock

138 taxa

The Paleobiology Database records 6 sites for Ostrea angasi, 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

4 references

Each of the 6 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 Ostrea angasi

Credit
Sowerby, 1871
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Ostrea angasi 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 itOstrea through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Sowerby 1846