Bradoriida

Bradoriida, also called bradoriids, are an extinct order of small marine arthropods with a bivalved carapace, which globally distributed, forming a significant portion of the Cambrian and Early Ordovician soft-bodied communities.

Bradoriida

Dayou Zhai, Mark Williams, David J. Siveter, Thomas H. P. Harvey, Robert S. Sansom, Sarah E. Gabbott, Derek J. Sivete… · CC BY 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
ArthropodaPBDB
Diet
omnivorePBDB
Life habit
nektobenthicPBDB
Motility
actively mobilePBDB
Vision
blindPBDB

Time the record covers

At least 68 million years on record.

The record covers at least 521 Mya to 452.8 Mya. No occurrence read is dated outside 538.8 Mya to 445.2 Mya.

Cambrian — about 489 of 492 occurrencesCambrianOrdovician — about 3 of 492 occurrencesOrdovician541–537 Mya — about 2 occurrences537–534 Mya — about 4 occurrences534–531 Mya — about 4 occurrences531–528 Mya — about 8 occurrences528–524 Mya — about 16 occurrences524–521 Mya — about 25 occurrences521–518 Mya — about 126 occurrences518–515 Mya — about 114 occurrences515–511 Mya — about 56 occurrences511–508 Mya — about 41 occurrences508–505 Mya — about 59 occurrences505–502 Mya — about 16 occurrences502–498 Mya — about 13 occurrences498–495 Mya — about 5 occurrences495–492 Mya — about 0.3 occurrences492–489 Mya — about 0.3 occurrences489–486 Mya — about 0.3 occurrences486–482 Mya — about 0.3 occurrences482–479 Mya — about 0.3 occurrences479–476 Mya — about 0.2 occurrences473–469 Mya — about 1 occurrence453–450 Mya — about 0.4 occurrences450–447 Mya — about 0.4 occurrences447–443 Mya — about 0.2 occurrences521 Mya452.8 Mya541 Mya443 Mya

492 occurrences of Bradoriida 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

492 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

61 formations

Yuanshan — 24.81°N, 102.58°EYuanshan — 24.67°N, 102.65°EYuanshan — 24.84°N, 102.41°EYuanshan — 25.72°N, 103.99°EYuanshan — 25.40°N, 103.38°EYuanshan — 25.50°N, 102.40°EYuanshan — 25.68°N, 102.17°EYuanshan — 24.00°N, 102.00°EWirrapowie Limestone — 30.72°S, 139.20°EWirrapowie Limestone — 30.79°S, 139.14°EWilkawillina Limestone — 30.72°S, 139.20°EWilkawillina Limestone — 31.85°S, 140.01°EBurgess Shale — 51.44°N, 116.47°WBurgess Shale — 51.38°N, 116.43°WMernmerna Formation — 30.72°S, 139.18°EMernmerna Formation — 31.85°S, 140.63°EMernmerna Formation — 31.00°S, 139.26°EMernmerna Formation — 31.01°S, 139.24°EBastion — 74.10°N, 23.00°WBastion — 73.52°N, 24.68°WBastion — 74.35°N, 22.77°WMernmerna — 31.19°S, 138.87°EMernmerna — 31.00°S, 139.26°EMernmerna — 31.01°S, 139.24°EMernmerna — 30.79°S, 139.14°EYu'anshan — 25.33°N, 103.50°EYu'anshan — 25.55°N, 102.40°EYu'anshan — 24.77°N, 102.58°EAjax Limestone — 30.60°S, 138.33°EBalang — 26.65°N, 107.95°EBalang — 27.17°N, 108.54°EBalang — 26.75°N, 108.17°EBalang — 26.57°N, 107.92°EBalang — 26.39°N, 107.69°EBalang — 28.42°N, 109.42°EKuonamka — 70.74°N, 112.98°EKuonamka — 70.22°N, 113.70°EHenson Gletscher — 82.00°N, 42.00°WHenson Gletscher — 82.17°N, 40.40°WBeetle Creek — 21.81°S, 139.98°EParara — 34.70°S, 137.71°EParara — 34.06°S, 138.02°EParara — 34.80°S, 137.69°EShuijingtuo — 30.77°N, 111.32°EShuijingtuo — 32.53°N, 107.92°EShuijingtuo — 34.32°N, 108.70°EShuijingtuo — 32.49°N, 107.12°EShuijingtuo — 30.50°N, 111.16°EBystrinskaya — 43.11°N, 74.78°ETannenknock — 50.21°N, 11.56°EJince — 49.78°N, 14.00°EJince — 49.00°N, 14.00°EWulongqing — 24.95°N, 102.80°EWulongqing — 25.68°N, 102.17°EQiongzhusi — 24.65°N, 102.97°EBuen — 83.05°N, 33.77°WBuen — 82.40°N, 51.33°WBuen — 82.87°N, 41.08°WBuen — 82.22°N, 29.97°WStephen — 51.17°N, 116.08°WStephen — 51.34°N, 116.37°WKutorgina — 61.13°N, 126.80°ETindall Limestone — 13.33°S, 130.63°ETindall Limestone — 13.88°S, 131.15°ETindall Limestone — 13.68°S, 131.33°E

Loading coastlines…

The named rock units Bradoriida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 37 further formations hold fewer occurrences each and are not listed. 4 occurrences have no formation on record, which is common for older literature.

Bradoriida and its relatives

Cambrian

Where Bradoriida and its relatives were recorded in the Cambrian.

Found in the same rock

1,286 taxa

The Paleobiology Database records 269 sites for Bradoriida, and this reads 240 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

78 references

Each of the 492 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. 66 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 Bradoriida

Credit
Dayou Zhai, Mark Williams, David J. Siveter, Thomas H. P. Harvey, Robert S. Sansom, Sarah E. Gabbott, Derek J. Sivete…
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Bradoriida 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 itArthropoda through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Raymond 1935)