Acernaspis orestes

Acernaspis orestes (Billings, 1860), a relative of Acernaspis orestes — not Acernaspis orestes itself

Not Acernaspis orestes. This is Acernaspis orestes (Billings, 1860), a relative — both are Phacopidae.

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
AcernaspisPBDB
Diet
carnivorePBDB, for Phacopina
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Phacopidae
Environment
marinePBDB, for Trilobita

Time the record covers

At most 7.6 million years on record.

Every occurrence read is dated to somewhere between 440.5 Mya and 432.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Silurian — about 54 of 54 occurrencesSilurian441–440 Mya — about 0.9 occurrences440–440 Mya — about 4 occurrences440–440 Mya — about 4 occurrences440–440 Mya — about 4 occurrences440–439 Mya — about 4 occurrences439–439 Mya — about 4 occurrences439–439 Mya — about 4 occurrences439–438 Mya — about 2 occurrences438–438 Mya — about 2 occurrences438–438 Mya — about 2 occurrences438–438 Mya — about 2 occurrences438–437 Mya — about 2 occurrences437–437 Mya — about 2 occurrences437–437 Mya — about 2 occurrences437–436 Mya — about 2 occurrences436–436 Mya — about 2 occurrences436–436 Mya — about 2 occurrences436–436 Mya — about 2 occurrences436–435 Mya — about 2 occurrences435–435 Mya — about 2 occurrences435–435 Mya — about 2 occurrences435–434 Mya — about 2 occurrences434–434 Mya — about 2 occurrences434–434 Mya — about 2 occurrences434–434 Mya — about 2 occurrences434–433 Mya — about 2 occurrences433–433 Mya — about 2 occurrences433–433 Mya — about 0.4 occurrences441 Mya432.4 Mya

54 occurrences of Acernaspis orestes on record, most of them in the Silurian. 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

54 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

Jupiter — 49.47°N, 63.62°WJupiter — 49.38°N, 63.60°WJupiter — 49.47°N, 63.12°WJupiter — 49.38°N, 63.51°WJupiter — 49.56°N, 63.35°WJupiter — 49.38°N, 63.40°WJupiter — 49.25°N, 62.29°WJupiter — 49.25°N, 62.29°WJupiter — 49.22°N, 62.24°WJupiter — 49.13°N, 62.21°WJupiter — 49.24°N, 62.39°WJupiter — 49.14°N, 62.36°WJupiter — 49.13°N, 62.29°WJupiter — 49.23°N, 62.55°WJupiter — 49.23°N, 62.60°WJupiter — 49.48°N, 63.16°WJupiter — 49.43°N, 63.12°WGun River — 49.57°N, 63.38°WGun River — 49.38°N, 62.46°WGun River — 49.34°N, 62.43°WGun River — 49.53°N, 63.54°WGun River — 49.25°N, 62.38°WGun River — 49.19°N, 61.72°WGun River or Goeland — 49.24°N, 62.48°WDamery Beds — 51.88°N, 2.23°W

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The named rock units Acernaspis orestes has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Acernaspis orestes and its relatives

Silurian

Where Acernaspis orestes and its relatives were recorded in the Silurian.

Found in the same rock

144 taxa

The Paleobiology Database records 54 sites for Acernaspis orestes, 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

3 references

Each of the 54 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 Acernaspis orestes (Billings, 1860)

Source
GBIF
Credit
via GBIF
Licence
CC BY-NC 4.0
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 itAcernaspis through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Billings 1860)