Astraspis desiderata

A picture published with the record for Astraspis desiderata. What it shows has not been checked.

Smithsonian Institution · CC0 · via Smithsonian. 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
AstraspisPBDB
Motility
actively mobilePBDB, for Chordata

Time the record covers

At most 13 million years on record.

Every occurrence read is dated to somewhere between 458.2 Mya and 445.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 16 of 16 occurrencesOrdovician458–458 Mya — about 0.1 occurrences458–457 Mya — about 0.1 occurrences457–457 Mya — about 0.8 occurrences457–456 Mya — about 0.9 occurrences456–456 Mya — about 0.9 occurrences456–456 Mya — about 0.9 occurrences456–455 Mya — about 0.9 occurrences455–455 Mya — about 0.9 occurrences455–454 Mya — about 0.9 occurrences454–454 Mya — about 0.9 occurrences454–453 Mya — about 0.9 occurrences453–453 Mya — about 0.9 occurrences453–452 Mya — about 0.9 occurrences452–452 Mya — about 0.9 occurrences452–451 Mya — about 0.9 occurrences451–451 Mya — about 0.9 occurrences451–450 Mya — about 0.9 occurrences450–450 Mya — about 0.9 occurrences450–450 Mya — about 0.8 occurrences450–449 Mya — about 0.1 occurrences449–449 Mya — about 0.1 occurrences449–448 Mya — about 0.1 occurrences448–448 Mya — about 0.1 occurrences448–447 Mya — about 0.1 occurrences447–447 Mya — about 0.1 occurrences447–446 Mya — about 0.1 occurrences446–446 Mya — about 0.1 occurrences446–445 Mya — about 0.1 occurrences458.7 Mya445 Mya

16 occurrences of Astraspis desiderata 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

16 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

4 formations

Gull River — 46.17°N, 83.92°WHarding — 38.00°N, 105.00°WHarding Sandstone — 38.47°N, 105.27°WBighorn Dolomite — 44.44°N, 106.92°W

Loading coastlines…

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

Astraspis desiderata and its relatives

Ordovician

Where Astraspis desiderata and its relatives were recorded in the Ordovician.

Found in the same rock

48 taxa

The Paleobiology Database records 15 sites for Astraspis desiderata, 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

7 references

Each of the 16 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 Astraspis desiderata

Source
Smithsonian
Credit
Smithsonian Institution
Licence
CC0 — this site’s default, not the record’s
Commercial use
the licence allows it

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

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

Keep going

What may have been alongside itAstraspis through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1892