Dacrydium

Dacrydium is a genus of conifers belonging to the podocarp family Podocarpaceae. Sixteen species of evergreen dioecious trees and shrubs are presently recognized. The genus was first described by Solander in 1786, and formerly included many more species, which were divided into sections A, B, and C by Florin in 1931. The revisions of de Laubenfels and Quinn, reclassified the former section A as the new genus Falcatifolium, divided Section C into new genera Lepidothamnus, Lagarostrobos and Halocarpus, and retained Section B as genus Dacrydium.

Dacrydium

James Shook · 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
PodocarpaceaePBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At least 65 million years on record.

The record covers at least 66 Mya to 129 ka. No occurrence read is dated outside 83.6 Mya to 0 Mya.

Late Cretaceous — about 4 of 70 occurrencesLate CretaceousPaleocene — about 1 of 70 occurrencesPaleoceneEocene — about 4 of 70 occurrencesEoceneOligocene — about 10 of 70 occurrencesOligoceneMiocene — about 9 of 70 occurrencesMiocenePliocene — about 0 of 70 occurrencesPleistocene — about 41 of 70 occurrences85–82 Mya — about 0.1 occurrences82–80 Mya — about 0.2 occurrences80–77 Mya — about 0.2 occurrences77–74 Mya — about 0.2 occurrences74–71 Mya — about 0.7 occurrences71–68 Mya — about 2 occurrences68–65 Mya — about 1 occurrence65–63 Mya — about 0.7 occurrences63–60 Mya — about 0.2 occurrences48–45 Mya — about 0.9 occurrences45–43 Mya — about 0.9 occurrences43–40 Mya — about 0.9 occurrences40–37 Mya — about 0.9 occurrences37–34 Mya — about 0.6 occurrences34–31 Mya — about 3 occurrences31–28 Mya — about 3 occurrences28–26 Mya — about 2 occurrences26–23 Mya — about 2 occurrences23–20 Mya — about 3 occurrences20–17 Mya — about 3 occurrences17–14 Mya — about 2 occurrences14–11 Mya — about 1 occurrence2.8–0 Mya — about 42 occurrences66 Mya129 ka85 Mya0 Mya

70 occurrences of Dacrydium on record, most of them in the Pleistocene. 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

70 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

9 formations

Morwell — 38.23°S, 146.62°EFoulden Hills Diatomite — 45.53°S, 170.22°EEyre — 29.32°S, 137.30°EPidinga — 31.24°S, 121.63°EMaastrichtian chalk — 56.97°N, 9.68°ERødvig — 56.97°N, 9.68°EWeglinek — 50.72°N, 21.95°EHalf Three Point — 62.23°S, 58.98°WLoreto — 53.13°S, 70.97°W

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The named rock units Dacrydium has been recovered from, largest first. Drawn where the rock is now, not where it formed. 52 occurrences have no formation on record, which is common for older literature.

Dacrydium and its relatives

Pleistocene

Where Dacrydium and its relatives were recorded in the Pleistocene.

Found in the same rock

770 taxa

The Paleobiology Database records 58 sites for Dacrydium, 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 70 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 content2

Picture of Dacrydium

Credit
James Shook
Licence
CC BY 2.5
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Dacrydium (Quendreda) hendersoni · FMNH:Invertebrate Zoology:311566

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 itPodocarpaceae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Soland and Lambert 1807