Ambrosia

Ragweeds are flowering plants in the genus Ambrosia in the aster family, Asteraceae. They are distributed in the tropical and subtropical regions of the Americas, especially North America, where the origin and center of diversity of the genus are in the southwestern United States and northwestern Mexico. Several species have been introduced to the Old World and some have naturalized and have become invasive species. In Europe, this spread is expected to continue, due to ongoing climate change.

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

Krzysztof Ziarnek Kenraiz · 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
Also called
ragweedPBDB
Sits inside
PlantaePBDB

Time the record covers

At least 11 million years on record.

The record covers at least 11.63 Mya to 11.7 ka. No occurrence read is dated outside 16.3 Mya to 0 Mya.

Miocene — about 4 of 12 occurrencesMiocenePliocene — about 0 of 12 occurrencesPleistocene — about 7 of 12 occurrencesPleistocene17–16 Mya — about 0.0 occurrences16–16 Mya — about 0.1 occurrences16–15 Mya — about 0.1 occurrences15–15 Mya — about 0.1 occurrences15–14 Mya — about 0.1 occurrences14–13 Mya — about 0.3 occurrences13–13 Mya — about 0.3 occurrences13–12 Mya — about 0.3 occurrences12–12 Mya — about 0.3 occurrences12–11 Mya — about 0.2 occurrences11–11 Mya — about 0.2 occurrences11–10 Mya — about 0.2 occurrences10–9.5 Mya — about 0.2 occurrences9.5–9.0 Mya — about 0.1 occurrences9.0–8.4 Mya — about 0.1 occurrences8.4–7.8 Mya — about 0.1 occurrences7.8–7.3 Mya — about 0.1 occurrences7.3–6.7 Mya — about 0.3 occurrences6.7–6.2 Mya — about 0.3 occurrences6.2–5.6 Mya — about 0.3 occurrences5.6–5.0 Mya — about 0.1 occurrences2.8–2.2 Mya — about 0.2 occurrences2.2–1.7 Mya — about 0.4 occurrences1.7–1.1 Mya — about 0.9 occurrences1.1–560 ka Mya — about 0.5 occurrences560 ka–0 Mya — about 6 occurrences11.63 Mya11.7 ka16.8 Mya0 Mya

12 occurrences of Ambrosia on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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

12 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

5 formations

Valentine — 42.00°N, 100.43°WChoptank — 38.16°N, 76.83°WSt. Marys — 38.16°N, 76.83°WEastover — 38.16°N, 76.83°WBacons Castle — 38.16°N, 76.83°W

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The named rock units Ambrosia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.

Ambrosia and its relatives

Pleistocene

Where Ambrosia and its relatives were recorded in the Pleistocene.

Found in the same rock

204 taxa

The Paleobiology Database records 12 sites for Ambrosia, 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

5 references

Each of the 12 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 content2

Picture of Ambrosia

Credit
Krzysztof Ziarnek Kenraiz
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itPlantae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Linnaeus 1753