Archiasterella

Achiasterella is a genus of scleritophoran known from the Burgess Shale and earlier (Branchian) deposits, and originally described as Chancelloria by Walcott. The species may represent form taxa rather than true species.

No picture of Archiasterella was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Archiasterella, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
ChancelloriidaePBDB
Diet
suspension feederPBDB, for Chancelloriidae
Life habit
epifaunalPBDB, for Chancelloriidae
Motility
stationary, attachedPBDB, for Chancelloriidae
Vision
blindPBDB, for Coeloscleritophora

Time the record covers

At least 24 million years on record.

The record covers at least 521 Mya to 497 Mya. No occurrence read is dated outside 538.8 Mya to 486.85 Mya.

Cambrian — about 106 of 106 occurrencesCambrianOrdovician — about 0 of 106 occurrences540–538 Mya — about 0.0 occurrences538–536 Mya — about 0.1 occurrences536–534 Mya — about 0.1 occurrences534–533 Mya — about 0.1 occurrences533–531 Mya — about 0.1 occurrences531–529 Mya — about 1 occurrence529–527 Mya — about 1 occurrence527–525 Mya — about 1 occurrence525–524 Mya — about 3 occurrences524–522 Mya — about 3 occurrences522–520 Mya — about 5 occurrences520–518 Mya — about 10 occurrences518–516 Mya — about 10 occurrences516–515 Mya — about 20 occurrences515–513 Mya — about 22 occurrences513–511 Mya — about 12 occurrences511–509 Mya — about 6 occurrences509–507 Mya — about 3 occurrences507–506 Mya — about 1 occurrence506–504 Mya — about 1 occurrence504–502 Mya — about 1.0 occurrences502–500 Mya — about 1.0 occurrences500–498 Mya — about 0.8 occurrences498–497 Mya — about 0.7 occurrences497–495 Mya — about 0.2 occurrences495–493 Mya — about 0.2 occurrences493–491 Mya — about 0.2 occurrences491–489 Mya — about 0.2 occurrences489–488 Mya — about 0.2 occurrences488–486 Mya — about 0.1 occurrences521 Mya497 Mya540 Mya486 Mya

106 occurrences of Archiasterella 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

106 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

33 formations

Parara — 34.70°S, 137.71°EParara — 34.06°S, 138.02°EParara — 34.73°S, 137.63°EParara — 34.80°S, 137.69°EParara Limestone — 34.92°S, 137.80°EXinji — 33.27°N, 112.98°EXinji — 34.53°N, 110.87°EXinji — 34.90°N, 106.85°EAjax Limestone — 30.59°S, 138.33°EPuerto Blanco — 30.42°N, 111.93°WWirrealpa Limestone — 31.27°S, 138.93°EShiyantou — 27.93°N, 103.56°EForteau — 49.60°N, 57.83°WForteau — 49.52°N, 57.71°WCoobowie Limestone — 34.67°S, 137.85°EKrasnoporog — 67.22°N, 87.03°EKrasnoporog — 67.14°N, 86.75°EDengying — 33.00°N, 107.92°EDengying — 32.53°N, 107.92°ECabitza Limestone — 39.40°N, 8.52°EZwetau — 51.17°N, 15.00°ECape Melville — 62.03°S, 57.60°WPestrotsvet — 60.83°N, 125.40°EYuanshan — 24.81°N, 102.58°ESukharikha — 67.14°N, 86.75°ESinsk — 61.08°N, 126.58°ECal Tepe — 37.42°N, 31.85°EYu'anshan — 27.93°N, 103.56°EZhujianqing — 24.73°N, 102.57°EQiongzhusi — 24.73°N, 102.57°EKulpara — 34.92°S, 137.80°ESellick Hill — 35.37°S, 138.38°E

Loading coastlines…

The named rock units Archiasterella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 further formations hold fewer occurrences each and are not listed. 1 occurrence has no formation on record, which is common for older literature.

Archiasterella and its relatives

Cambrian

Where Archiasterella and its relatives were recorded in the Cambrian.

Found in the same rock

395 taxa

The Paleobiology Database records 71 sites for Archiasterella, 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

28 references

Each of the 106 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. 16 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 content0

No picture of Archiasterella was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Archiasterella, or no answer at all. This entry cannot say which.

No 3D scan of Archiasterella 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 itChancelloriidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Sdzuy 1969