Johnstonia

No picture of Johnstonia was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Johnstonia, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PteridophytaPBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At most 41 million years on record.

Every occurrence read is dated to somewhere between 241.464 Mya and 201.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Triassic — about 1 of 10 occurrencesMiddle TriassicLate Triassic — about 9 of 10 occurrencesLate TriassicEarly Jurassic — about 0 of 10 occurrences242–241 Mya — about 0.1 occurrences241–239 Mya — about 0.3 occurrences239–238 Mya — about 0.3 occurrences238–237 Mya — about 0.3 occurrences237–235 Mya — about 0.5 occurrences235–234 Mya — about 0.5 occurrences234–233 Mya — about 0.5 occurrences233–231 Mya — about 0.5 occurrences231–230 Mya — about 0.5 occurrences230–228 Mya — about 0.5 occurrences228–227 Mya — about 0.5 occurrences227–226 Mya — about 0.3 occurrences226–224 Mya — about 0.3 occurrences224–223 Mya — about 0.3 occurrences223–221 Mya — about 0.3 occurrences221–220 Mya — about 0.3 occurrences220–219 Mya — about 0.3 occurrences219–217 Mya — about 0.3 occurrences217–216 Mya — about 0.3 occurrences216–214 Mya — about 0.3 occurrences214–213 Mya — about 0.3 occurrences213–212 Mya — about 0.3 occurrences212–210 Mya — about 0.3 occurrences210–209 Mya — about 0.3 occurrences209–208 Mya — about 0.3 occurrences208–206 Mya — about 0.3 occurrences206–205 Mya — about 0.3 occurrences205–203 Mya — about 0.2 occurrences203–202 Mya — about 0.2 occurrences202–201 Mya — about 0.1 occurrences242.3 Mya200.6 Mya

10 occurrences of Johnstonia on record, most of them in the Late Triassic. 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

10 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

4 formations

Potrerillos — 33.00°S, 69.10°WCacheuta — 33.00°S, 69.10°WAgua de la Zorra — 32.45°S, 69.18°WPaso Flores — 40.30°S, 70.70°W

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The named rock units Johnstonia 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.

Johnstonia and its relatives

Late Triassic

Where Johnstonia and its relatives were recorded in the Late Triassic.

Found in the same rock

43 taxa

The Paleobiology Database records 6 sites for Johnstonia, 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

5 references

Each of the 10 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 content0

No picture of Johnstonia was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Johnstonia, or no answer at all. This entry cannot say which.

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itPteridophyta through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Walkom 1925