Isoxys

Searched as Isoxys auratus. The Paleobiology Database treats Isoxys as the accepted name.

Isoxys is a genus of extinct bivalved Cambrian arthropod; the various species of which are thought to have been freely swimming predators. It had a pair of large spherical eyes, and two large frontal appendages used to grasp prey.

Isoxys

Holly Sullivan (artwork) Caixia Zhang, Yu Liu, Javier Ortega-Hernández, Joanna M. Wolfe, Changfei Jin, Huijuan Mai, X… · 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
IsoxyidaePBDB
Diet
suspension feederPBDB
Life habit
nektonicPBDB
Motility
actively mobilePBDB
Vision
well-developedPBDB

Time the record covers

At most 8 million years on record.

The one occurrence read is dated to somewhere between 514.5 Mya and 506.5 Mya, which is a dating window rather than a span.

Cambrian — about 1 of 1 occurrenceCambrian515–514 Mya — about 0.0 occurrences514–514 Mya — about 0.0 occurrences514–514 Mya — about 0.0 occurrences514–514 Mya — about 0.0 occurrences514–513 Mya — about 0.0 occurrences513–513 Mya — about 0.0 occurrences513–513 Mya — about 0.0 occurrences513–512 Mya — about 0.0 occurrences512–512 Mya — about 0.0 occurrences512–512 Mya — about 0.0 occurrences512–511 Mya — about 0.0 occurrences511–511 Mya — about 0.0 occurrences511–511 Mya — about 0.0 occurrences511–511 Mya — about 0.0 occurrences511–510 Mya — about 0.0 occurrences510–510 Mya — about 0.0 occurrences510–510 Mya — about 0.0 occurrences510–509 Mya — about 0.0 occurrences509–509 Mya — about 0.0 occurrences509–509 Mya — about 0.0 occurrences509–508 Mya — about 0.0 occurrences508–508 Mya — about 0.0 occurrences508–508 Mya — about 0.0 occurrences508–508 Mya — about 0.0 occurrences508–507 Mya — about 0.0 occurrences507–507 Mya — about 0.0 occurrences507–507 Mya — about 0.0 occurrences507–506 Mya — about 0.0 occurrences515 Mya506 Mya

1 occurrence of Isoxys 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

1 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

1 formation

Balang — 26.39°N, 107.69°E

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

Isoxys and its relatives

Cambrian

Where Isoxys and its relatives were recorded in the Cambrian.

Found in the same rock

661 taxa

The Paleobiology Database records 64 sites for Isoxys, 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

1 reference

Each of the 1 occurrence 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Isoxys

Credit
Holly Sullivan (artwork) Caixia Zhang, Yu Liu, Javier Ortega-Hernández, Joanna M. Wolfe, Changfei Jin, Huijuan Mai, X…
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Isoxys was found in Sketchfab.

Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.

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 itIsoxyidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1890