Diplazium
Diplazium is a genus of ferns that specifically includes the approximately 400 known species of twinsorus ferns. The Greek root is diplazein meaning double: the indusia in this genus lie on both sides of the vein. These ferns were earlier considered part of either the Athyriaceae, Dryopteridaceae, Aspleniaceae, or Polypodiaceae families or recognized as belonging to their own taxonomic family. The Pteridophyte Phylogeny Group classification of 2016 places the genus in the Athyriaceae. The taxonomy of the genus is difficult and poorly known, and by 2009 has never been the subject of a complete monographic study. Their distribution is pantropical, with a few species extending into temperate areas.
Poyt448 Peter Woodard · 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- Also called
- twinsorus fernPBDB
- Sits inside
- AthyriaceaePBDB
- Diet
- "photoautotroph"PBDB, for Streptophyta
Time the record covers
At least 2.5 million years on record.
The record covers at least 2.58 Mya to 11.7 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.
4 occurrences of Diplazium on record. 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
4 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
2 formations
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The named rock units Diplazium has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Found in the same rock
112 taxa- Acer2 sites
- Acer trilobatum2 sites
- Alnus2 sites
- Bambusites2 sites
- Carex2 sites
- Cinnamomum2 sites
- Deutzia sp.2 sites
- Fagara2 sites
- Ficus tiliaefolia2 sites
- Glyptostrobus europaeus2 sites
- Halesia2 sites
- Ligustrum2 sites
- Lonicera2 sites
- Magnolia2 sites
- Phragmites2 sites
- Pseudotsuga2 sites
- Rhamnus2 sites
- Rhododendron2 sites
- Salix wyomingensis2 sites
- Sassafras2 sites
- Selaginella2 sites
- Symplocos2 sites
- Wisteria2 sites
- Zelkova ungeri2 sites
The Paleobiology Database records 3 sites for Diplazium, 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
2 references- A Catalogue of Fossil Plants from India Part 6: Cenozoic (Quaternary) Palynology and Palaeobotany2
- Late Miocene and Pliocene Floras in Central Honshu, Japan2
Each of the 4 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Diplazium
- Source
- Wikipedia/Commons
- Credit
- Poyt448 Peter Woodard
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Diplazium was found in MorphoSource and Sketchfab.
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, “Diplazium”
- 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 itAthyriaceae through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Swartz 1800