Eucalyptus
Eucalyptus is a genus of more than 700 species of flowering plants in the family Myrtaceae. Most species of Eucalyptus are trees, often mallees, and a few are shrubs. Along with several other genera in the tribe Eucalypteae, including Corymbia and Angophora, they are commonly known as eucalypts or "gum trees". Species of Eucalyptus have bark that is either smooth, fibrous, hard, or stringy and leaves that have oil glands. The sepals and petals are fused to form a "cap" or operculum over the stamens, hence the name from Greek eû 'well' and kaluptós 'covered'.

Ethel Aardvark · CC BY 3.0 · 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
- eucalyptusPBDB
- Sits inside
- MyrtaceaePBDB
- Diet
- "photoautotroph"PBDB, for Angiospermae
Time the record covers
At least 93 million years on record.
The record covers at least 93.9 Mya to 11.7 ka. No occurrence read is dated outside 100.5 Mya to 0 Mya.
100 occurrences of Eucalyptus 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
100 occurrences- Late Cretaceous10%
- Paleoceneunder 1%
- Eocene26%
- Oligocene1%
- Miocene2%
- Pleistocene59%
- Holocene2%
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
11 formations
- Huitrera Formation16
- Black Creek Formation5
- Menshi Formation3
- Liuqu Formation2
- Relu Formation2
- Tuscaloosa Formation2
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The named rock units Eucalyptus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 65 occurrences have no formation on record, which is common for older literature.
Eucalyptus and its relatives
PleistoceneWhere Eucalyptus and its relatives were recorded in the Pleistocene.
Found in the same rock
675 taxa- Podocarpus49 sites
- Myrtaceae46 sites
- Asteraceae45 sites
- Poaceae45 sites
- Araucaria44 sites
- Monolete44 sites
- Acacia43 sites
- Chenopodiaceae43 sites
- Cyperaceae42 sites
- Dodonaea41 sites
- Cunoniaceae40 sites
- Dacrydium40 sites
- Proteaceae40 sites
- Rapanea39 sites
- Agathis38 sites
- Elaeocarpus38 sites
- Cyathea37 sites
- Casuarinaceae36 sites
- Plantago36 sites
- Haloragis35 sites
- Leptospermum35 sites
- Macaranga34 sites
- Syzygium33 sites
- Dicksonia32 sites
The Paleobiology Database records 75 sites for Eucalyptus, 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- Early Pleistocene vegetation change in upland south-eastern Australia35
- The fossil record of Eucalyptus in Patagonia16
- A complete pollen record of the last 230 ka from Lynch's Crater, north-eastern Australia13
- A Late Pleistocene and Holocene pollen diagram from Lynch’s Crater, northeastern Queensland, Australia9
- A catalogue of Cenozoic megafossil plants in China7
- The Upper Cretaceous and Eocene floras of South Carolina and Georgia7
- Fossil evidence for a hyperdiverse sclerophyll flora under a non–Mediterranean-type climate2
- Upper Cretaceous floras of the eastern Gulf region in Tennessee, Mississippi, Alabama, and Georgia2
- Oldest Known Eucalyptus Macrofossils Are from South America1
- An Early to Middle Pleistocene Flora of Subalpine Affinities in Lowland Western Tasmania1
- The Oligocene Berwick Quarry Flora - Rainforest in a Drying Environment1
- A Catalogue of Fossil Plants from India Part 6: Cenozoic (Quaternary) Palynology and Palaeobotany1
Each of the 100 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 content2
Picture of Eucalyptus
- Source
- Wikipedia/Commons
- Credit
- Ethel Aardvark
- Licence
- CC BY 3.0
- 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 was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Eucalyptus”
- 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 itMyrtaceae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. L'Héritier de Brutelle 1789