Alula

Alula

via iDigBio · CC0 · via iDigBio. 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
AlulinaePBDB
Diet
suspension feederPBDB, for Bivalvia
Life habit
deep infaunalPBDB
Motility
facultatively mobilePBDB, for Bivalvia
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 12 million years on record.

The record covers at least 266.9 Mya to 254.14 Mya. No occurrence read is dated outside 274.4 Mya to 251.902 Mya.

Permian — about 8 of 8 occurrencesPermianEarly Triassic — about 0 of 8 occurrences275–274 Mya — about 0.2 occurrences274–273 Mya — about 0.5 occurrences273–273 Mya — about 0.5 occurrences273–272 Mya — about 0.5 occurrences272–271 Mya — about 0.5 occurrences271–270 Mya — about 0.5 occurrences270–269 Mya — about 0.5 occurrences269–269 Mya — about 0.5 occurrences269–268 Mya — about 0.5 occurrences268–267 Mya — about 0.5 occurrences267–266 Mya — about 0.4 occurrences266–266 Mya — about 0.4 occurrences266–265 Mya — about 0.4 occurrences265–264 Mya — about 0.2 occurrences260–259 Mya — about 0.1 occurrences259–258 Mya — about 0.1 occurrences258–258 Mya — about 0.1 occurrences258–257 Mya — about 0.1 occurrences257–256 Mya — about 0.1 occurrences256–255 Mya — about 0.1 occurrences255–255 Mya — about 0.1 occurrences255–254 Mya — about 0.2 occurrences254–253 Mya — about 0.3 occurrences253–252 Mya — about 0.3 occurrences252–251 Mya — about 0.1 occurrences266.9 Mya254.14 Mya274.9 Mya251.4 Mya

8 occurrences of Alula on record, most of them in the Permian. 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

8 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

6 formations

Kaibab — 35.20°N, 111.57°WKufeng — 30.70°N, 118.40°EPrikazan — 55.78°N, 48.95°EBaitugan — 55.74°N, 52.03°EPechishchi — 55.78°N, 48.93°ELykins — 40.98°N, 105.19°W

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The named rock units Alula has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Alula and its relatives

Permian

Where Alula and its relatives were recorded in the Permian.

Found in the same rock

154 taxa

The Paleobiology Database records 8 sites for Alula, 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

5 references

Each of the 8 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 Alula

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itAlulinae through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Girty 1912