Equisetum columnare

Ghedoghedo · CC BY-SA 3.0 · via Wikidata/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
- EquisetumPBDB
- Diet
- "photoautotroph"PBDB, for Streptophyta
Time the record covers
At least 3.8 million years on record.
The record covers at least 174.7 Mya to 170.9 Mya. No occurrence read is dated outside 201.4 Mya to 143.1 Mya.
36 occurrences of Equisetum columnare on record, most of them in the Middle Jurassic. 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
36 occurrences- Early Jurassic4%
- Middle Jurassic95%
- Late Jurassicunder 1%
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
4 formations
- Saltwick Formation · Ravenscar Group31
- Cloughton Formation · Ravenscar Group2
- Lower Saltwick Formation · Ravenscar Group1
- Kurnub Formation1
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The named rock units Equisetum columnare has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Equisetum columnare and its relatives
Middle JurassicWhere Equisetum columnare and its relatives were recorded in the Middle Jurassic.
Found in the same rock
107 taxa- Nilsonia31 sites
- Pachypteris28 sites
- Ptilophyllum28 sites
- Sagenopteris colpodes25 sites
- Elatides22 sites
- Brachyphyllum20 sites
- Pseudoctenis19 sites
- Cladophlebis15 sites
- Caytonia12 sites
- Cycadolepis12 sites
- Eretmophyllum12 sites
- Ctenis11 sites
- Marattia11 sites
- Nilssoniopteris11 sites
- Sphenobaiera11 sites
- Brachyphyllum mamillare10 sites
- Clathropteris10 sites
- Elatocladus9 sites
- Phlebopteris9 sites
- Otozamites8 sites
- Androstrobus7 sites
- Bennettitocarpus spp.7 sites
- Dictyophyllum rugosum7 sites
- Pachypteris lanceolata7 sites
The Paleobiology Database records 34 sites for Equisetum columnare, 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
6 references- Principal Components and Correspondence Analyses of Quantitative Data from a Jurassic Plant Bed27
- The Yorkshire Jurassic Flora V. Coniferales4
- The Jurassic Flora of Yorkshire2
- Jurassic plants from Djebel Tih, Sinai.1
- Palaeobotany and petrology of a Middle Jurassic ironstone bed at Wrack Hills, North Yorkshire1
- Macroflora and palynomorphs from Lower Jurassic of Budos Mountain, Montenegro1
Each of the 36 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. 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 Equisetum columnare
- Source
- Wikidata/Commons
- Credit
- Ghedoghedo
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Equisetum columnare was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itEquisetum through timeFormations of the Middle JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Brongniart 1828