Acanthomeridion serratum

Acanthomeridion is an extinct arthropod found in the Cambrian Stage 3 aged Chengjiang biota deposits of Yunnan, China. It is a member of Artiopoda, placing it as a close relative of trilobites.

Acanthomeridion serratum

Kun-sheng Du, Jin Guo, Sarah R Losso, Stephen Pates, Ming Li, Ai-lin Chen · CC BY 4.0 · via Wikipedia/Commons. 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
AcanthomeridionPBDB
Diet
deposit feederPBDB, for Acanthomeridion
Life habit
epifaunalPBDB, for Acanthomeridion
Motility
actively mobilePBDB, for Acanthomeridion
Vision
blindPBDB, for Bradoriida

Time the record covers

At most 6.5 million years on record.

Every occurrence read is dated to somewhere between 521 Mya and 514.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 10 of 10 occurrencesCambrian521–521 Mya — about 0.5 occurrences521–521 Mya — about 0.5 occurrences521–520 Mya — about 0.5 occurrences520–520 Mya — about 0.5 occurrences520–520 Mya — about 0.5 occurrences520–520 Mya — about 0.5 occurrences520–519 Mya — about 0.5 occurrences519–519 Mya — about 0.5 occurrences519–519 Mya — about 0.5 occurrences519–519 Mya — about 0.5 occurrences519–518 Mya — about 0.5 occurrences518–518 Mya — about 0.5 occurrences518–518 Mya — about 0.5 occurrences518–518 Mya — about 0.5 occurrences518–517 Mya — about 0.5 occurrences517–517 Mya — about 0.5 occurrences517–517 Mya — about 0.5 occurrences517–517 Mya — about 0.5 occurrences517–516 Mya — about 0.5 occurrences516–516 Mya — about 0.5 occurrences516–516 Mya — about 0.1 occurrences516–516 Mya — about 0.1 occurrences516–515 Mya — about 0.1 occurrences515–515 Mya — about 0.1 occurrences515–515 Mya — about 0.1 occurrences515–515 Mya — about 0.1 occurrences521.5 Mya514 Mya

10 occurrences of Acanthomeridion serratum 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

10 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

Qiongzhusi — 24.65°N, 102.97°EYuanshan — 24.81°N, 102.58°EYuanshan — 24.84°N, 102.41°EYu'anshan — 24.77°N, 102.58°E

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

Acanthomeridion serratum and its relatives

Cambrian

Where Acanthomeridion serratum and its relatives were recorded in the Cambrian.

Found in the same rock

174 taxa

The Paleobiology Database records 8 sites for Acanthomeridion serratum, 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 10 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 Acanthomeridion serratum

Credit
Kun-sheng Du, Jin Guo, Sarah R Losso, Stephen Pates, Ming Li, Ai-lin Chen
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itAcanthomeridion through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hou et al. 1989