Arandaspis prionotolepis

Arandaspis is an extinct genus of jawless fish that lived in Australia during the Darriwilian age of the Ordovician period. It contains two species, Arandaspis prionotolepis and Arandaspis sp.

Arandaspis prionotolepis

Michal Maňas · Public Domain · 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
ArandaspisPBDB
Motility
actively mobilePBDB, for Chordata

Time the record covers

At most 9.1 million years on record.

Every occurrence read is dated to somewhere between 477.1 Mya and 468 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 2 of 2 occurrencesOrdovician477–477 Mya — about 0.0 occurrences477–477 Mya — about 0.1 occurrences477–476 Mya — about 0.1 occurrences476–476 Mya — about 0.1 occurrences476–476 Mya — about 0.1 occurrences476–475 Mya — about 0.1 occurrences475–475 Mya — about 0.1 occurrences475–475 Mya — about 0.1 occurrences475–474 Mya — about 0.1 occurrences474–474 Mya — about 0.1 occurrences474–474 Mya — about 0.1 occurrences474–473 Mya — about 0.1 occurrences473–473 Mya — about 0.1 occurrences473–473 Mya — about 0.1 occurrences473–472 Mya — about 0.1 occurrences472–472 Mya — about 0.1 occurrences472–472 Mya — about 0.1 occurrences472–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–470 Mya — about 0.1 occurrences470–470 Mya — about 0.1 occurrences470–470 Mya — about 0.1 occurrences470–469 Mya — about 0.1 occurrences469–469 Mya — about 0.1 occurrences469–469 Mya — about 0.1 occurrences469–468 Mya — about 0.1 occurrences468–468 Mya — about 0.0 occurrences477.6 Mya467.5 Mya

2 occurrences of Arandaspis prionotolepis 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

2 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

Stairway Sandstone — 25.50°S, 134.00°EStairway Sandstone — 24.72°S, 134.02°E

Loading coastlines…

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

Arandaspis prionotolepis and its relatives

Ordovician

Where Arandaspis prionotolepis and its relatives were recorded in the Ordovician.

Found in the same rock

4 taxa

The Paleobiology Database records 2 sites for Arandaspis prionotolepis, 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

1 reference

Each of the 2 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. 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 Arandaspis prionotolepis

Credit
Michal Maňas
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Arandaspis prionotolepis 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 itArandaspis through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ritchie and Gilbert-Tomlinson 1977