Changia

Changia

via iDigBio · via iDigBio. 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
PtychaspididaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Asaphida
Motility
fast-movingPBDB, for Asaphida
Vision
well-developedPBDB, for Ptychaspididae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 1.9 million years on record.

The record covers at least 488.3 Mya to 486.4 Mya. No occurrence read is dated outside 497 Mya to 477.1 Mya.

Cambrian — about 17 of 19 occurrencesCambrianOrdovician — about 2 of 19 occurrencesOrdovician498–497 Mya — about 0.1 occurrences497–496 Mya — about 0.3 occurrences496–495 Mya — about 0.3 occurrences495–495 Mya — about 0.3 occurrences495–494 Mya — about 0.3 occurrences494–493 Mya — about 0.3 occurrences493–493 Mya — about 0.3 occurrences493–492 Mya — about 0.3 occurrences492–491 Mya — about 0.3 occurrences491–491 Mya — about 2 occurrences491–490 Mya — about 3 occurrences490–489 Mya — about 3 occurrences489–488 Mya — about 3 occurrences488–488 Mya — about 2 occurrences488–487 Mya — about 1 occurrence487–486 Mya — about 0.6 occurrences486–486 Mya — about 0.3 occurrences486–485 Mya — about 0.3 occurrences485–484 Mya — about 0.3 occurrences484–484 Mya — about 0.1 occurrences484–483 Mya — about 0.1 occurrences483–482 Mya — about 0.1 occurrences482–481 Mya — about 0.1 occurrences481–481 Mya — about 0.1 occurrences481–480 Mya — about 0.1 occurrences480–479 Mya — about 0.1 occurrences479–479 Mya — about 0.1 occurrences479–478 Mya — about 0.1 occurrences478–477 Mya — about 0.1 occurrences477–477 Mya — about 0.0 occurrences488.3 Mya – 486.4 Mya497.5 Mya476.6 Mya

19 occurrences of Changia 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

19 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

6 formations

Fengshan — 36.07°N, 113.82°EFengshan — 39.75°N, 118.32°EHwajeol — 37.08°N, 129.02°EHwajeol — 37.07°N, 129.15°ETomahawk — 22.00°S, 134.83°ETomahawk — 22.70°S, 133.05°ETomahawk — 22.06°S, 138.91°EPacoota — 23.62°S, 134.50°EPacoota — 23.75°S, 133.33°EYehLi — 36.00°N, 114.00°ETangcun — 30.67°N, 118.18°E

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

Changia and its relatives

Cambrian

Where Changia and its relatives were recorded in the Cambrian.

Found in the same rock

31 taxa

The Paleobiology Database records 12 sites for Changia, 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

6 references

Each of the 19 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 Changia

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

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 itPtychaspididae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Sun 1924