Agathoxylon

Agathoxylon is a form genus of fossil wood, including massive tree trunks. Although identified from the late Palaeozoic to the end of the Mesozoic, Agathoxylon is common from the Carboniferous to Triassic. Agathoxylon represents the wood of multiple conifer groups, including both Araucariaceae and Cheirolepidiaceae, with late Paleozoic and Triassic forms possibly representing other conifers or other seed plant groups like "pteridosperms".

Agathoxylon

Babakathy · CC0 · 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
AraucariaceaePBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At least 182 million years on record.

The record covers at least 205.7 Mya to 23.04 Mya. No occurrence read is dated outside 237 Mya to 5.333 Mya.

Middle Triassic — about 0 of 26 occurrencesLate Triassic — about 4 of 26 occurrencesLate TriassicEarly Jurassic — about 1 of 26 occurrencesEarly JurassicMiddle Jurassic — about 2 of 26 occurrencesLate Jurassic — about 1 of 26 occurrencesEarly Cretaceous — about 8 of 26 occurrencesEarly CretaceousLate Cretaceous — about 8 of 26 occurrencesLate CretaceousPaleocene — about 0 of 26 occurrencesEocene — about 1 of 26 occurrencesEoceneOligocene — about 0 of 26 occurrencesMiocene — about 1 of 26 occurrencesPliocene — about 0 of 26 occurrencesPleistocene — about 0 of 26 occurrences242–234 Mya — about 0.4 occurrences234–226 Mya — about 0.9 occurrences226–218 Mya — about 0.9 occurrences218–210 Mya — about 0.9 occurrences210–201 Mya — about 0.8 occurrences201–193 Mya — about 0.3 occurrences193–185 Mya — about 0.3 occurrences185–177 Mya — about 0.3 occurrences177–169 Mya — about 0.1 occurrences169–161 Mya — about 2 occurrences153–145 Mya — about 1.0 occurrences145–137 Mya — about 1 occurrence137–129 Mya — about 0.2 occurrences129–121 Mya — about 0.3 occurrences121–113 Mya — about 5 occurrences113–105 Mya — about 0.5 occurrences105–97 Mya — about 4 occurrences97–89 Mya — about 2 occurrences89–81 Mya — about 0.4 occurrences81–73 Mya — about 1 occurrence73–65 Mya — about 1 occurrence57–49 Mya — about 0.9 occurrences49–41 Mya — about 0.1 occurrences25–17 Mya — about 0.4 occurrences17–8.7 Mya — about 0.5 occurrences8.7–700 ka Mya — about 0.2 occurrences205.7 Mya23.04 Mya242 Mya700 ka

26 occurrences of Agathoxylon on record, most of them in the Early Cretaceous. 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

26 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

15 formations

Punta del Barco — 48.66°S, 69.12°WPunta del Barco — 48.64°S, 69.13°WKachaike — 48.46°S, 71.84°WChihuido — 35.62°S, 69.58°WCalcaires à Stipites — 44.18°N, 3.22°EA2 subunit — 45.95°N, 0.90°WBajo Tigre — 48.51°S, 69.10°WAnfiteatro de Ticó — 48.51°S, 69.10°WLa Meseta — 64.23°S, 56.66°WLa Matilde — 47.96°S, 68.00°WLlantenes — 35.62°S, 69.58°WEl Freno — 34.95°S, 69.72°WIschigualasto — 30.21°S, 67.83°WCerro Fortaleza — 49.93°S, 72.05°WPuntudo Chico — 43.35°S, 67.80°WAllen — 39.44°S, 67.30°W

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The named rock units Agathoxylon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Agathoxylon and its relatives

Early Cretaceous

Where Agathoxylon and its relatives were recorded in the Early Cretaceous.

Found in the same rock

207 taxa

The Paleobiology Database records 19 sites for Agathoxylon, 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

17 references

Each of the 26 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. 5 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 Agathoxylon

Credit
Babakathy
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Agathoxylon was found in Smithsonian Open Access and Sketchfab.

MorphoSource was 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 itAraucariaceae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hartig 1848