Amecephalus

Amecephalus

via iDigBio · CC0 · 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
AlokistocaridaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Alokistocaridae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 12 million years on record.

The record covers at least 509.7 Mya to 497 Mya. No occurrence read is dated outside 538.8 Mya to 486.85 Mya.

Cambrian — about 79 of 79 occurrencesCambrianOrdovician — about 0 of 79 occurrences540–538 Mya — about 0.0 occurrences538–536 Mya — about 0.0 occurrences536–534 Mya — about 0.0 occurrences534–533 Mya — about 0.0 occurrences533–531 Mya — about 0.0 occurrences531–529 Mya — about 0.0 occurrences529–527 Mya — about 0.0 occurrences527–525 Mya — about 0.0 occurrences525–524 Mya — about 0.0 occurrences524–522 Mya — about 0.0 occurrences522–520 Mya — about 0.0 occurrences520–518 Mya — about 0.0 occurrences518–516 Mya — about 0.0 occurrences516–515 Mya — about 0.2 occurrences515–513 Mya — about 0.4 occurrences513–511 Mya — about 0.6 occurrences511–509 Mya — about 5 occurrences509–507 Mya — about 18 occurrences507–506 Mya — about 27 occurrences506–504 Mya — about 14 occurrences504–502 Mya — about 3 occurrences502–500 Mya — about 3 occurrences500–498 Mya — about 3 occurrences498–497 Mya — about 2 occurrences497–495 Mya — about 0.2 occurrences495–493 Mya — about 0.2 occurrences493–491 Mya — about 0.2 occurrences491–489 Mya — about 0.2 occurrences489–488 Mya — about 0.2 occurrences488–486 Mya — about 0.1 occurrences509.7 Mya497 Mya540 Mya486 Mya

79 occurrences of Amecephalus on record, most of them in the Cambrian. 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

79 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

18 formations

Pioche Shale — 37.76°N, 114.55°WPioche Shale — 37.61°N, 114.76°WPioche Shale — 37.41°N, 114.79°WPioche Shale — 37.90°N, 114.61°WPioche Shale — 37.92°N, 114.45°WPioche Shale — 37.90°N, 114.41°WPioche Shale — 37.63°N, 114.51°WPioche Shale — 40.00°N, 115.00°WMt. Whyte — 51.50°N, 116.50°WMt. Whyte — 51.42°N, 116.45°WMt. Whyte — 51.33°N, 116.23°WMt. Whyte — 50.90°N, 115.62°WEmigrant — 37.72°N, 117.44°WEmigrant — 37.71°N, 117.45°WEmigrant — 37.63°N, 117.25°WMonola — 37.01°N, 117.79°WSan Isidro — 32.86°S, 69.00°WLead Bell Shale — 42.00°N, 112.00°WMount Cap — 67.24°N, 126.31°WCadiz — 34.54°N, 115.47°WMount Whyte — 52.83°N, 119.25°WMount Whyte — 51.39°N, 116.43°WChisholm — 39.54°N, 112.92°WCathedral Dolomite — 52.83°N, 119.25°WArrojos — 30.42°N, 111.93°WLakeview — 47.97°N, 116.43°WIlltyd — 65.09°N, 134.71°WLa Laja — 31.25°S, 68.57°WElanka — 61.27°N, 128.06°EUte — 41.57°N, 112.05°WLangston — 41.97°N, 111.70°W

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

Amecephalus and its relatives

Cambrian

Where Amecephalus and its relatives were recorded in the Cambrian.

Found in the same rock

264 taxa

The Paleobiology Database records 74 sites for Amecephalus, 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

24 references

Each of the 79 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. 12 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 Amecephalus

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Amecephalus 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 itAlokistocaridae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1924