Plesiosmilia

Plesiosmilia

via iDigBio · CC BY · 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
AstraeidaePBDB
Diet
microcarnivorePBDB, for Anthozoa
Life habit
intermediate-level epifaunalPBDB, for Anthozoa
Motility
stationary, attachedPBDB, for Anthozoa
Vision
blindPBDB, for Anthozoa

Time the record covers

At least 54 million years on record.

The record covers at least 154.8 Mya to 100.5 Mya. No occurrence read is dated outside 161.5 Mya to 93.9 Mya.

Middle Jurassic — about 0 of 17 occurrencesLate Jurassic — about 6 of 17 occurrencesLate JurassicEarly Cretaceous — about 9 of 17 occurrencesEarly CretaceousLate Cretaceous — about 2 of 17 occurrencesLate Cretaceous163–161 Mya — about 0.7 occurrences161–158 Mya — about 2 occurrences158–156 Mya — about 2 occurrences156–153 Mya — about 1 occurrence153–151 Mya — about 0.3 occurrences151–149 Mya — about 0.2 occurrences128–125 Mya — about 0.1 occurrences125–123 Mya — about 0.8 occurrences123–121 Mya — about 0.9 occurrences121–118 Mya — about 1 occurrence118–116 Mya — about 1 occurrence116–114 Mya — about 1 occurrence114–111 Mya — about 1 occurrence111–109 Mya — about 1 occurrence109–107 Mya — about 0.9 occurrences107–104 Mya — about 0.3 occurrences104–102 Mya — about 0.2 occurrences102–100 Mya — about 0.4 occurrences100–97 Mya — about 0.7 occurrences97–95 Mya — about 0.7 occurrences95–93 Mya — about 0.3 occurrences154.8 Mya100.5 Mya163 Mya93 Mya

17 occurrences of Plesiosmilia on record, most of them in the Early Cretaceous. 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

17 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

Espinazo del Diablo — 29.44°N, 109.46°WSmeltertown — 31.45°N, 106.55°WBuda Limestone — 30.13°N, 97.82°W

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The named rock units Plesiosmilia 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.

Plesiosmilia and its relatives

Early Cretaceous

Where Plesiosmilia and its relatives were recorded in the Early Cretaceous.

Found in the same rock

104 taxa

The Paleobiology Database records 5 sites for Plesiosmilia, 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

9 references

Each of the 17 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 Plesiosmilia

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Plesiosmilia was found in MorphoSource and Sketchfab.

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 itAstraeidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Milaschewitsch 1876