Pseudolarix

Pseudolarix is a genus of coniferous trees in the pine family, Pinaceae, containing three species, the single extant Pseudolarix amabilis and the two extinct species Pseudolarix japonica and Pseudolarix wehrii. Pseudolarix species are commonly known as golden larch, but are not true larches (Larix) being more closely related to Keteleeria, Abies and Cedrus. P. amabilis is native to eastern China, occurring in small areas in the mountains of southern Anhui, Zhejiang, Fujian, Jiangxi, Hunan, Hubei and eastern Sichuan, at altitudes of 100–1,500 m (328–4,921 ft). P. wehrii is described from fossils dating to the Early Eocene (Ypresian), of Western North America where it is found in the Eocene Okanagan Highlands Allenby and Klondike Mountain Formations. The youngest known occurrence is of mummified fossils found in the Late Eocene Buchanan Lake Formation on Axel Heiberg Island. P. japonica is known from Middle Miocene to Pliocene sediments in Japan and Miocene deposits of Korea. Fossils assigned to Pseudolarix as a genus date possibly as old as the Early Cretaceous Hauterivian stage in Mongolia.

Pseudolarix

Eric Hunt · CC BY 2.5 · 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
AbietoideaePBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At least 137 million years on record.

The record covers at least 143.1 Mya to 5.333 Mya. No occurrence read is dated outside 161.5 Mya to 2.58 Mya.

Middle Jurassic — about 0 of 32 occurrencesLate Jurassic — about 2 of 32 occurrencesLate JurassicEarly Cretaceous — about 3 of 32 occurrencesEarly CretaceousLate Cretaceous — about 0 of 32 occurrencesLate CretaceousPaleocene — about 0 of 32 occurrencesEocene — about 9 of 32 occurrencesEoceneOligocene — about 6 of 32 occurrencesMiocene — about 8 of 32 occurrencesMiocenePliocene — about 3 of 32 occurrencesPleistocene — about 0 of 32 occurrences165–159 Mya — about 0.1 occurrences159–154 Mya — about 0.3 occurrences154–148 Mya — about 0.5 occurrences148–143 Mya — about 1 occurrence126–121 Mya — about 0.2 occurrences121–115 Mya — about 1 occurrence115–110 Mya — about 0.7 occurrences110–104 Mya — about 0.3 occurrences104–99 Mya — about 0.3 occurrences99–93 Mya — about 0.3 occurrences60–55 Mya — about 0.9 occurrences55–49 Mya — about 4 occurrences49–44 Mya — about 2 occurrences44–38 Mya — about 1 occurrence38–33 Mya — about 0.5 occurrences33–27 Mya — about 1 occurrence27–22 Mya — about 5 occurrences22–16 Mya — about 2 occurrences16–11 Mya — about 3 occurrences11–5.5 Mya — about 4 occurrences5.5–0 Mya — about 3 occurrences143.1 Mya5.333 Mya165 Mya0 Mya

32 occurrences of Pseudolarix on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

32 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

13 formations

Challis Volcanics — 44.37°N, 114.24°WItahana — 36.50°N, 139.00°EItahana — 36.25°N, 139.00°EOgawa — 36.42°N, 138.08°ETokoname — 34.67°N, 136.92°EKholodzhikan Suite — 53.30°N, 120.90°EKrivorechenskaya — 64.48°N, 168.92°EBuchanan Lake — 79.92°N, 88.97°WZaza — 53.30°N, 112.09°ETumenzi — 43.32°N, 128.16°EQingtinggang — 30.03°N, 121.08°EXiananshan — 29.15°N, 121.23°EAllenby — 49.45°N, 120.57°WKlondike Mountain — 48.65°N, 118.73°W

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The named rock units Pseudolarix has been recovered from, largest first. Drawn where the rock is now, not where it formed. 14 occurrences have no formation on record, which is common for older literature.

Pseudolarix and its relatives

Eocene

Where Pseudolarix and its relatives were recorded in the Eocene.

Found in the same rock

459 taxa

The Paleobiology Database records 19 sites for Pseudolarix, 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

18 references

Each of the 32 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. 6 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 Pseudolarix

Credit
Eric Hunt
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itAbietoideae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gordon and Glendinning 1858