Hoekaspis

Hoekaspis is an extinct genus of trilobites from the family Asaphidae. It lived during the early part of the Arenig stage of the Ordovician, a faunal stage which lasted from approximately 466 to 461 million years ago.

Hoekaspis

Tiia Monto · CC BY-SA 3.0 · 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
AsaphidaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Asaphida
Motility
fast-movingPBDB, for Asaphida
Vision
well-developedPBDB, for Asaphidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 3.3 million years on record.

The record covers at least 471.3 Mya to 468 Mya. No occurrence read is dated outside 477.1 Mya to 458.2 Mya.

Ordovician — about 24 of 24 occurrencesOrdovician478–477 Mya — about 0.2 occurrences477–476 Mya — about 0.6 occurrences476–476 Mya — about 0.6 occurrences476–475 Mya — about 0.6 occurrences475–474 Mya — about 0.6 occurrences474–474 Mya — about 0.6 occurrences474–473 Mya — about 0.6 occurrences473–472 Mya — about 0.6 occurrences472–472 Mya — about 0.6 occurrences472–471 Mya — about 0.8 occurrences471–470 Mya — about 1 occurrence470–470 Mya — about 1 occurrence470–469 Mya — about 1 occurrence469–468 Mya — about 0.9 occurrences468–468 Mya — about 0.9 occurrences468–467 Mya — about 1.0 occurrences467–466 Mya — about 1.0 occurrences466–466 Mya — about 1.0 occurrences466–465 Mya — about 1.0 occurrences465–464 Mya — about 1.0 occurrences464–464 Mya — about 1.0 occurrences464–463 Mya — about 1.0 occurrences463–462 Mya — about 1.0 occurrences462–462 Mya — about 1.0 occurrences462–461 Mya — about 1.0 occurrences461–460 Mya — about 0.7 occurrences460–460 Mya — about 0.7 occurrences460–459 Mya — about 0.7 occurrences459–458 Mya — about 0.7 occurrences458–458 Mya — about 0.2 occurrences471.3 Mya468 Mya477.6 Mya457.7 Mya

24 occurrences of Hoekaspis on record, most of them in the Ordovician. 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

24 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

11 formations

Sepulturas — 22.92°S, 65.62°WSepulturas — 23.00°S, 66.00°WSepulturas — 23.71°S, 65.55°WSepulturas — 23.92°S, 65.60°WCoroico — 20.10°S, 65.13°WCoroico — 15.48°S, 68.62°WSanta Gertrudis — 25.00°S, 65.00°WSanta Gertrudis — 24.13°S, 65.01°WSella — 21.38°S, 64.72°WLandeyran — 43.47°N, 3.08°EAcoite — 24.00°S, 66.00°WCapinota — 17.72°S, 66.28°WObispo — 20.00°S, 65.00°WCapillas — 24.00°S, 65.00°WPircancha — 21.00°S, 65.00°WUpper Fezouata — 32.00°N, 9.00°W

Loading coastlines…

The named rock units Hoekaspis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Hoekaspis and its relatives

Ordovician

Where Hoekaspis and its relatives were recorded in the Ordovician.

Found in the same rock

165 taxa

The Paleobiology Database records 23 sites for Hoekaspis, 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

14 references

Each of the 24 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. 2 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 Hoekaspis

Credit
Tiia Monto
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Hoekaspis 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 itAsaphidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kobayashi 1937