Acmarhachis hybrida

Acmarhachis hybrida

C. Washburn · CC0 · 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
AcmarhachisPBDB
Diet
detritivorePBDB, for Agnostida
Life habit
epifaunalPBDB, for Agnostida
Motility
slow-movingPBDB, for Agnostida
Vision
blindPBDB, for Agnostidae

Time the record covers

At most 3.2 million years on record.

Every occurrence read is dated to somewhere between 494.2 Mya and 491 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 5 of 5 occurrencesCambrian494–494 Mya — about 0.0 occurrences494–494 Mya — about 0.1 occurrences494–494 Mya — about 0.1 occurrences494–494 Mya — about 0.1 occurrences494–494 Mya — about 0.1 occurrences494–493 Mya — about 0.1 occurrences493–493 Mya — about 0.1 occurrences493–493 Mya — about 0.1 occurrences493–493 Mya — about 0.1 occurrences493–493 Mya — about 0.1 occurrences493–493 Mya — about 0.2 occurrences493–493 Mya — about 0.4 occurrences493–492 Mya — about 0.4 occurrences492–492 Mya — about 0.4 occurrences492–492 Mya — about 0.4 occurrences492–492 Mya — about 0.4 occurrences492–492 Mya — about 0.4 occurrences492–492 Mya — about 0.4 occurrences492–492 Mya — about 0.4 occurrences492–491 Mya — about 0.4 occurrences491–491 Mya — about 0.1 occurrences491–491 Mya — about 0.1 occurrences491–491 Mya — about 0.1 occurrences491–491 Mya — about 0.0 occurrences494.7 Mya490.5 Mya

5 occurrences of Acmarhachis hybrida 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

5 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

Bestogai — 43.53°N, 69.95°EChatsworth — 21.94°S, 140.33°EZhumabai — 43.53°N, 69.95°E

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

Acmarhachis hybrida and its relatives

Cambrian

Where Acmarhachis hybrida and its relatives were recorded in the Cambrian.

Found in the same rock

21 taxa

The Paleobiology Database records 2 sites for Acmarhachis hybrida, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

2 references

Each of the 5 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 Acmarhachis hybrida

Source
GBIF
Credit
C. Washburn
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Acmarhachis hybrida 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 itAcmarhachis through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Shergold 1980