Praeconia

Praeconia

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
AstartidaePBDB
Diet
suspension feederPBDB, for Crassatelloidea
Life habit
infaunalPBDB, for Crassatelloidea
Motility
facultatively mobilePBDB, for Crassatelloidea
Vision
blindPBDB, for Crassatelloidea
Environment
marinePBDB, for Crassatelloidea

Time the record covers

At least 56 million years on record.

The record covers at least 205.7 Mya to 149.2 Mya. No occurrence read is dated outside 211.18 Mya to 143.1 Mya.

Late Triassic — about 5 of 50 occurrencesLate TriassicEarly Jurassic — about 18 of 50 occurrencesEarly JurassicMiddle Jurassic — about 13 of 50 occurrencesMiddle JurassicLate Jurassic — about 14 of 50 occurrencesLate JurassicEarly Cretaceous — about 0 of 50 occurrences213–210 Mya — about 0.2 occurrences210–208 Mya — about 0.4 occurrences208–205 Mya — about 0.6 occurrences205–203 Mya — about 2 occurrences203–201 Mya — about 3 occurrences201–198 Mya — about 5 occurrences198–196 Mya — about 4 occurrences196–194 Mya — about 4 occurrences194–191 Mya — about 1 occurrence191–189 Mya — about 0.3 occurrences189–187 Mya — about 0.3 occurrences187–184 Mya — about 0.3 occurrences184–182 Mya — about 0.9 occurrences182–180 Mya — about 0.6 occurrences180–177 Mya — about 0.2 occurrences177–175 Mya — about 0.2 occurrences175–172 Mya — about 0.0 occurrences170–168 Mya — about 2 occurrences168–165 Mya — about 10 occurrences165–163 Mya — about 0.8 occurrences163–161 Mya — about 0.4 occurrences161–158 Mya — about 0.7 occurrences158–156 Mya — about 2 occurrences156–154 Mya — about 1 occurrence154–151 Mya — about 1 occurrence151–149 Mya — about 2 occurrences149–146 Mya — about 4 occurrences146–144 Mya — about 3 occurrences144–142 Mya — about 0.2 occurrences205.7 Mya149.2 Mya213 Mya142 Mya

50 occurrences of Praeconia on record, most of them in the Early 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

50 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

16 formations

Tolo Channel — 22.44°N, 114.28°ETolo Channel — 22.49°N, 114.32°ENayband — 32.40°N, 57.45°ENayband — 32.50°N, 57.35°ESedrina — 45.00°N, 9.00°ECalcaire de Caen — 48.82°N, 0.03°ECalcaire de Caen — 48.97°N, 0.13°WJhurio — 23.50°N, 70.50°ECalcaires marno-crayeux inferieurs — 49.87°N, 4.06°ECalcaires marno-crayeux inferieurs — 49.88°N, 4.04°ECoral Rag — 53.98°N, 1.53°WUpper Calcareous Grit — 53.98°N, 1.53°WWest Walton — 52.18°N, 0.12°EPatcham — 23.52°N, 69.00°ESedrina Limestone — 46.00°N, 10.00°EHigashinagano — 34.17°N, 131.00°ETurmiel — 40.43°N, 1.42°WShuomo — 28.00°N, 86.00°EMassenkalk — 48.89°N, 11.94°ERajabiah — 30.64°N, 33.41°E

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The named rock units Praeconia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 occurrences have no formation on record, which is common for older literature.

Praeconia and its relatives

Early Jurassic

Where Praeconia and its relatives were recorded in the Early Jurassic.

Found in the same rock

677 taxa

The Paleobiology Database records 32 sites for Praeconia, 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

23 references

Each of the 50 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. 11 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 Praeconia

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 itAstartidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Stoliczka 1871