Brachytrema

Brachytrema

via iDigBio · CC BY-NC-ND · 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
BrachytrematidaePBDB
Diet
grazerPBDB, for Cerithioidea
Life habit
epifaunalPBDB, for Cerithioidea
Motility
actively mobilePBDB, for Cerithioidea
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 19 million years on record.

The record covers at least 168.2 Mya to 149.2 Mya. No occurrence read is dated outside 170.9 Mya to 143.1 Mya.

Middle Jurassic — about 4 of 11 occurrencesMiddle JurassicLate Jurassic — about 7 of 11 occurrencesLate JurassicEarly Cretaceous — about 0 of 11 occurrences171–170 Mya — about 0.2 occurrences170–170 Mya — about 0.4 occurrences170–169 Mya — about 0.4 occurrences169–168 Mya — about 0.8 occurrences168–167 Mya — about 1.0 occurrences167–166 Mya — about 1.0 occurrences166–165 Mya — about 0.4 occurrences160–159 Mya — about 0.1 occurrences159–158 Mya — about 2 occurrences158–157 Mya — about 0.1 occurrences153–152 Mya — about 0.0 occurrences152–151 Mya — about 0.3 occurrences151–150 Mya — about 0.3 occurrences150–149 Mya — about 0.3 occurrences149–148 Mya — about 0.6 occurrences148–147 Mya — about 0.6 occurrences147–146 Mya — about 0.6 occurrences146–145 Mya — about 0.6 occurrences145–144 Mya — about 0.6 occurrences144–144 Mya — about 0.6 occurrences144–143 Mya — about 0.3 occurrences168.2 Mya149.2 Mya171.5 Mya142.5 Mya

11 occurrences of Brachytrema on record, most of them in the Late Jurassic. 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

11 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

4 formations

Kap Leslie — 70.48°N, 21.97°WCalcaire de Caen — 48.97°N, 0.13°WHampen Marly — 51.75°N, 1.17°WMassenkalk — 48.89°N, 11.94°E

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The named rock units Brachytrema has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Brachytrema and its relatives

Late Jurassic

Where Brachytrema and its relatives were recorded in the Late Jurassic.

Found in the same rock

347 taxa

The Paleobiology Database records 10 sites for Brachytrema, 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

7 references

Each of the 11 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 Brachytrema

Source
iDigBio
Credit
via iDigBio
Licence
CC BY-NC-ND
Commercial use
the licence does not allow 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 itBrachytrematidae through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Morris and Lycett 1851