Changchengia

Changchengia is a genus of possible alga from the early-mid Proterozoic. It contains one species, Changchengia stipitata. This genus is known from various formations, such as the Olive Shales of the Vindhya Range and the Saraipali Formation in India, alongside the Chuanlinggou Formation of China.

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

Tourmaline Ctenacanth · 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
EukaryotaPBDB

Time the record covers

At most 200 million years on record.

The one occurrence read is dated to somewhere between 1800 Mya and 1600 Mya, which is a dating window rather than a span.

1804–1797 Mya — about 0.0 occurrences1797–1790 Mya — about 0.0 occurrences1790–1783 Mya — about 0.0 occurrences1783–1776 Mya — about 0.0 occurrences1776–1769 Mya — about 0.0 occurrences1769–1762 Mya — about 0.0 occurrences1762–1755 Mya — about 0.0 occurrences1755–1749 Mya — about 0.0 occurrences1749–1742 Mya — about 0.0 occurrences1742–1735 Mya — about 0.0 occurrences1735–1728 Mya — about 0.0 occurrences1728–1721 Mya — about 0.0 occurrences1721–1714 Mya — about 0.0 occurrences1714–1707 Mya — about 0.0 occurrences1707–1700 Mya — about 0.0 occurrences1700–1693 Mya — about 0.0 occurrences1693–1686 Mya — about 0.0 occurrences1686–1679 Mya — about 0.0 occurrences1679–1672 Mya — about 0.0 occurrences1672–1665 Mya — about 0.0 occurrences1665–1658 Mya — about 0.0 occurrences1658–1651 Mya — about 0.0 occurrences1651–1645 Mya — about 0.0 occurrences1645–1638 Mya — about 0.0 occurrences1638–1631 Mya — about 0.0 occurrences1631–1624 Mya — about 0.0 occurrences1624–1617 Mya — about 0.0 occurrences1617–1610 Mya — about 0.0 occurrences1610–1603 Mya — about 0.0 occurrences1603–1596 Mya — about 0.0 occurrences1804 Mya1596 Mya

1 occurrence of Changchengia on record. 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

1 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

1 formation

Chuanlinggou — 40.60°N, 118.53°E

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

Found in the same rock

5 taxa

The Paleobiology Database records 1 site for Changchengia, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

1 reference

Each of the 1 occurrence 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Changchengia

Credit
Tourmaline Ctenacanth
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Changchengia 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 itEukaryota through time

Occurrence data from the Paleobiology Database, CC BY 4.0. Yan and Liu 1997