Pseudopediastrum

Pseudopediastrum is a genus of green algae in the family Hydrodictyaceae. It is very common in freshwater regions throughout the world.

Pseudopediastrum

Environmental Protection Agency · 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
HydrodictyaceaePBDB
Diet
"photoautotroph"PBDB, for Chlorophyta
Life habit
epifaunalPBDB, for Chlorophyta
Motility
stationary, attachedPBDB, for Chlorophyta
Environment
lagoonal,coastal,inner shelf,marine,brackish,freshwaterPBDB, for Chlorophyta

Time the record covers

At most 11 million years on record.

Every occurrence read is dated to somewhere between 72.2 Mya and 61.66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 17 of 22 occurrencesLate CretaceousPaleocene — about 5 of 22 occurrencesPaleocene72–72 Mya — about 0.8 occurrences72–72 Mya — about 1 occurrence72–71 Mya — about 1 occurrence71–71 Mya — about 1 occurrence71–70 Mya — about 1 occurrence70–70 Mya — about 1 occurrence70–70 Mya — about 1 occurrence70–69 Mya — about 1 occurrence69–69 Mya — about 1 occurrence69–68 Mya — about 1 occurrence68–68 Mya — about 1 occurrence68–68 Mya — about 1 occurrence68–67 Mya — about 1 occurrence67–67 Mya — about 1 occurrence67–67 Mya — about 1 occurrence67–66 Mya — about 1 occurrence66–66 Mya — about 0.7 occurrences66–65 Mya — about 0.4 occurrences65–65 Mya — about 0.4 occurrences65–65 Mya — about 0.4 occurrences65–64 Mya — about 0.4 occurrences64–64 Mya — about 0.4 occurrences64–63 Mya — about 0.4 occurrences63–63 Mya — about 0.4 occurrences63–63 Mya — about 0.4 occurrences63–62 Mya — about 0.4 occurrences62–62 Mya — about 0.4 occurrences62–62 Mya — about 0.3 occurrences72.7 Mya61.2 Mya

22 occurrences of Pseudopediastrum on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

22 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

La Colonia — 42.52°S, 66.84°WLa Colonia — 42.97°S, 67.54°WLa Colonia — 43.02°S, 67.66°WLa Colonia — 43.10°S, 67.75°WLa Colonia — 43.01°S, 67.62°W

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

Pseudopediastrum and its relatives

Late Cretaceous

Where Pseudopediastrum and its relatives were recorded in the Late Cretaceous.

Found in the same rock

203 taxa

The Paleobiology Database records 11 sites for Pseudopediastrum, 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

Each of the 22 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Pseudopediastrum

Credit
Environmental Protection Agency
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Pseudopediastrum was found in Smithsonian Open Access and Sketchfab.

MorphoSource was 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 itHydrodictyaceae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hegewald 2005