Metasequoia occidentalis
Metasequoia occidentalis is an extinct redwood species of the family Cupressaceae that is found as fossils throughout the Northern Hemisphere. It is one of three extinct species of Metasequoia that are currently recognized as valid.

Georgialh · 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
- MetasequoiaPBDB
- Diet
- "photoautotroph"PBDB, for Streptophyta
Time the record covers
At least 54 million years on record.
The record covers at least 66 Mya to 11.63 Mya. No occurrence read is dated outside 72.2 Mya to 2.58 Mya.
175 occurrences of Metasequoia occidentalis on record, most of them in the Paleocene. 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
175 occurrencesThese 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
20 formations
- Fort Union Formation78
- Willwood Formation18
- Golden Valley Formation15
- Okinoyama Formation · Ube Group12
- Yagii Formation8
- Itahana Formation · Tomioka Group7
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The named rock units Metasequoia occidentalis 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.
Metasequoia occidentalis and its relatives
PaleoceneWhere Metasequoia occidentalis and its relatives were recorded in the Paleocene.
Found in the same rock
474 taxa- Glyptostrobus europaeus44 sites
- Cercidiphyllum genetrix39 sites
- Ampelopsis acerifolia36 sites
- Dicotyledoneae35 sites
- Hicoria antiquora34 sites
- Alnus24 sites
- Cercidiphyllum23 sites
- Corylites19 sites
- Ginkgo adiantoides18 sites
- Acer17 sites
- Platanus raynoldsii17 sites
- Equisetum16 sites
- Persites argutus16 sites
- Eucommia15 sites
- Salix15 sites
- Ulmus15 sites
- Averrhoites affinis14 sites
- Beringiaphyllum cupanioides14 sites
- Palaeocarpinus14 sites
- Taxodium13 sites
- Glyptostrobus12 sites
- Lauraceae12 sites
- Bambusites11 sites
- Cinnamomum11 sites
The Paleobiology Database records 159 sites for Metasequoia occidentalis, 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
19 references- Plant and mammal diversity in the Paleocene to Early Eocene of the Bighorn Basin42
- Late Paleocene-early Eocene climate changes in southwestern Wyoming: Paleobotanical analysis31
- Paleocene flora of the Rocky Mountains and Great Plains24
- Late Miocene and Pliocene Floras in Central Honshu, Japan17
- Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of western North Dakota15
- Megaflora of the Hell Creek and lower Fort Union Formations in the western Dakotas: Vegetational response to climate change, the Cretaceous-Tertiary boundary event, and rapid marine transgression14
- The Eocene flora of the Ube coal-field, southwest Honshu, Japan12
- The Eocene Germer Basin Flora of South-Central Idaho7
- Fossil Plants of the Tertiary Beaverhead Basins in Southwestern Montana3
- The early Eocene flora of Horsefly, British Columbia, Canada and its phytogeographic significance1
- The Eocene Thomas Ranch flora, Allenby Formation, Princeton, British Columbia, Canada1
- Flora of the Ravenscrag Formation (Paleocene), Southwestern Saskatchewan, Canada1
Each of the 175 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. 7 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 content2
Picture of Metasequoia occidentalis
- Source
- Wikipedia/Commons
- Credit
- Georgialh
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Licence
- CC0 Public Domain
- Commercial use
- the licence allows it
Smithsonian Open Access 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 itMetasequoia through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Chaney 1951