Microceras

Microceras F.Sandberger, 1886, a relative of Microceras — not Microceras itself

Not Microceras. This is Microceras F.Sandberger, 1886, a relative — both are Aciculidae.

via GBIF · CC BY-NC 4.0 · via GBIF. 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
GastropodaPBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 258 million years on record.

The record covers at least 458.2 Mya to 199.5 Mya. No occurrence read is dated outside 471.3 Mya to 192.9 Mya.

Ordovician — about 19 of 36 occurrencesOrdovicianSilurian — about 0 of 36 occurrencesDevonian — about 0 of 36 occurrencesCarboniferous — about 0 of 36 occurrencesPermian — about 0 of 36 occurrencesEarly Triassic — about 0 of 36 occurrencesMiddle Triassic — about 0 of 36 occurrencesLate Triassic — about 0 of 36 occurrencesEarly Jurassic — about 17 of 36 occurrences477–467 Mya — about 0.3 occurrences467–458 Mya — about 0.7 occurrences458–448 Mya — about 15 occurrences448–438 Mya — about 3 occurrences207–197 Mya — about 6 occurrences197–187 Mya — about 11 occurrences458.2 Mya199.5 Mya477 Mya187 Mya

36 occurrences of Microceras on record, most of them in the Ordovician. 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

36 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

13 formations

Lexington Limestone — 38.00°N, 84.67°WKope — 39.00°N, 84.00°WLower Lias — 51.80°N, 1.88°WHuayacocotla — 20.33°N, 98.22°WFairview — 39.00°N, 84.00°WBellevue — 39.00°N, 84.00°WCorryville — 39.00°N, 84.00°WMount Auburn — 39.00°N, 84.00°WWaynesville — 39.00°N, 84.00°WLiberty — 39.00°N, 84.00°WElkhorn — 39.00°N, 84.00°WLexington Ls — 37.65°N, 84.77°WLexington — 37.65°N, 84.77°W

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The named rock units Microceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 occurrences have no formation on record, which is common for older literature.

Microceras and its relatives

Ordovician

Where Microceras and its relatives were recorded in the Ordovician.

Found in the same rock

394 taxa

The Paleobiology Database records 26 sites for Microceras, 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

6 references

Each of the 36 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 Microceras F.Sandberger, 1886

Source
GBIF
Credit
via GBIF
Licence
CC BY-NC 4.0
Commercial use
the licence does not allow it

No 3D scan of Microceras 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 itGastropoda through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1845