Equisetum similkamense

Equisetum similkamense is an extinct horsetail species in the family Equisetaceae described from a group of whole plant fossils including rhizomes, stems, and leaves. The species is known from Ypresian sediments exposed in British Columbia, Canada. It is one of several extinct species placed in the living genus Equisetum.

Equisetum similkamense

John William Dawson · Public Domain · 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
EquisetumPBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At most 8 million years on record.

The one occurrence read is dated to somewhere between 56 Mya and 48.07 Mya, which is a dating window rather than a span.

Paleocene — about 0 of 1 occurrenceEocene — about 1 of 1 occurrenceEocene56–56 Mya — about 0.0 occurrences56–56 Mya — about 0.0 occurrences56–55 Mya — about 0.0 occurrences55–55 Mya — about 0.0 occurrences55–55 Mya — about 0.0 occurrences55–54 Mya — about 0.0 occurrences54–54 Mya — about 0.0 occurrences54–54 Mya — about 0.0 occurrences54–54 Mya — about 0.0 occurrences54–53 Mya — about 0.0 occurrences53–53 Mya — about 0.0 occurrences53–53 Mya — about 0.0 occurrences53–52 Mya — about 0.0 occurrences52–52 Mya — about 0.0 occurrences52–52 Mya — about 0.0 occurrences52–51 Mya — about 0.0 occurrences51–51 Mya — about 0.0 occurrences51–51 Mya — about 0.0 occurrences51–51 Mya — about 0.0 occurrences51–50 Mya — about 0.0 occurrences50–50 Mya — about 0.0 occurrences50–50 Mya — about 0.0 occurrences50–49 Mya — about 0.0 occurrences49–49 Mya — about 0.0 occurrences49–49 Mya — about 0.0 occurrences49–48 Mya — about 0.0 occurrences48–48 Mya — about 0.0 occurrences48–48 Mya — about 0.0 occurrences56.5 Mya47.6 Mya

1 occurrence of Equisetum similkamense on record, most of them in the Eocene. 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

1 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

1 formation

Allenby — 49.45°N, 120.59°W

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The named rock units Equisetum similkamense has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Equisetum similkamense and its relatives

Eocene

Where Equisetum similkamense and its relatives were recorded in the Eocene.

Found in the same rock

8 taxa

The Paleobiology Database records 1 site for Equisetum similkamense, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

1 reference

Each of the 1 occurrence 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Equisetum similkamense

Credit
John William Dawson
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Equisetum similkamense 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.

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 itEquisetum through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Dawson 1878