Allonnia

Allonnia is a genus of coeloscleritophoran known as complete scleritomes from the Middle Cambrian Burgess Shale. It is also a constituent of the small shelly fauna.

Allonnia

瑞丽江的河水 · CC BY-SA 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
ChancelloriidaePBDB
Diet
suspension feederPBDB
Life habit
epifaunalPBDB
Motility
stationary, attachedPBDB
Vision
blindPBDB, for Coeloscleritophora

Time the record covers

At least 14 million years on record.

The record covers at least 521 Mya to 506.5 Mya. No occurrence read is dated outside 538.8 Mya to 504.5 Mya.

Cambrian — about 87 of 87 occurrencesCambrian539–538 Mya — about 0.0 occurrences538–537 Mya — about 0.1 occurrences537–536 Mya — about 0.1 occurrences536–535 Mya — about 0.1 occurrences535–534 Mya — about 0.1 occurrences534–532 Mya — about 0.1 occurrences532–531 Mya — about 0.1 occurrences531–530 Mya — about 1 occurrence530–529 Mya — about 2 occurrences529–528 Mya — about 2 occurrences528–526 Mya — about 2 occurrences526–525 Mya — about 2 occurrences525–524 Mya — about 3 occurrences524–523 Mya — about 3 occurrences523–522 Mya — about 3 occurrences522–520 Mya — about 5 occurrences520–519 Mya — about 8 occurrences519–518 Mya — about 8 occurrences518–517 Mya — about 8 occurrences517–516 Mya — about 8 occurrences516–515 Mya — about 9 occurrences515–513 Mya — about 7 occurrences513–512 Mya — about 7 occurrences512–511 Mya — about 1 occurrence511–510 Mya — about 1 occurrence510–509 Mya — about 1 occurrence509–507 Mya — about 1 occurrence507–506 Mya — about 1 occurrence506–505 Mya — about 1 occurrence505–504 Mya — about 0.3 occurrences521 Mya506.5 Mya539.5 Mya503.8 Mya

87 occurrences of Allonnia 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

87 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

23 formations

Dengying — 33.00°N, 107.92°EDengying — 32.53°N, 107.92°EDengying — 33.67°N, 109.46°EParara — 34.70°S, 137.71°EParara — 34.73°S, 137.63°EParara — 34.80°S, 137.69°EParara Limestone — 34.92°S, 137.80°EShiyantou — 27.93°N, 103.56°EXinji — 33.27°N, 112.98°EXinji — 34.90°N, 106.85°EAjax Limestone — 30.59°S, 138.33°EShuijingtuo — 32.53°N, 107.92°EShuijingtuo — 32.49°N, 107.12°EShuijingtuo — 30.50°N, 111.16°EPestrotsvet — 60.70°N, 124.72°EPestrotsvet — 60.82°N, 125.00°EPestrotsvet — 60.83°N, 125.40°EYu'anshan — 27.93°N, 103.56°EQiongzhusi — 24.73°N, 102.57°ESellick Hill — 35.37°S, 138.38°EBalang — 28.42°N, 109.42°ECape Melville — 62.03°S, 57.60°WYuanshan — 24.84°N, 102.41°EYuanshan — 24.81°N, 102.58°EZhujianqing — 24.73°N, 102.57°EBurj — 30.92°N, 35.52°EEmigrant — 37.71°N, 117.45°WKrasnoporog — 67.22°N, 87.03°ECoobowie Limestone — 34.67°S, 137.85°EKulpara — 34.70°S, 137.71°ECampito — 37.72°N, 117.33°WPuerto Blanco — 30.42°N, 111.93°WHenson Gletscher — 82.17°N, 40.40°W

Loading coastlines…

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

Allonnia and its relatives

Cambrian

Where Allonnia and its relatives were recorded in the Cambrian.

Found in the same rock

484 taxa

The Paleobiology Database records 61 sites for Allonnia, 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

21 references

Each of the 87 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. 9 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 Allonnia

Credit
瑞丽江的河水
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Allonnia 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. Doré and Reid 1965