Posidonia

Searched as Posidonia wengensis altior. The Paleobiology Database treats Posidonia as the accepted name.

Posidonia

Uncredited · 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
PosidoniidaePBDB
Diet
suspension feederPBDB, for Ostreida
Life habit
epifaunalPBDB, for Ostreida
Motility
stationaryPBDB, for Posidoniidae
Vision
blindPBDB, for Bivalvia
Environment
marine,brackishPBDB, for Ostreida

Time the record covers

At most 5.6 million years on record.

Every occurrence read is dated to somewhere between 247 Mya and 241.464 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Triassic — about 0 of 3 occurrencesMiddle Triassic — about 3 of 3 occurrencesMiddle Triassic247–247 Mya — about 0.1 occurrences247–247 Mya — about 0.1 occurrences247–246 Mya — about 0.1 occurrences246–246 Mya — about 0.1 occurrences246–246 Mya — about 0.1 occurrences246–246 Mya — about 0.1 occurrences246–246 Mya — about 0.1 occurrences246–245 Mya — about 0.1 occurrences245–245 Mya — about 0.1 occurrences245–245 Mya — about 0.1 occurrences245–245 Mya — about 0.1 occurrences245–244 Mya — about 0.1 occurrences244–244 Mya — about 0.3 occurrences244–244 Mya — about 0.3 occurrences244–244 Mya — about 0.3 occurrences244–244 Mya — about 0.3 occurrences244–243 Mya — about 0.2 occurrences243–243 Mya — about 0.1 occurrences243–243 Mya — about 0.1 occurrences243–243 Mya — about 0.1 occurrences243–242 Mya — about 0.1 occurrences242–242 Mya — about 0.1 occurrences242–242 Mya — about 0.1 occurrences242–242 Mya — about 0.1 occurrences242–242 Mya — about 0.1 occurrences242–241 Mya — about 0.1 occurrences247.5 Mya241 Mya

3 occurrences of Posidonia on record, most of them in the Middle Triassic. 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

3 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.

Posidonia and its relatives

Middle Triassic

Where Posidonia and its relatives were recorded in the Middle Triassic.

Found in the same rock

2,095 taxa

The Paleobiology Database records 278 sites for Posidonia, and this reads 240 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

2 references

Each of the 3 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 content2

Picture of Posidonia

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itPosidoniidae through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bronn 1828