Cycadeoidea

Cycadeoidea is an extinct genus of bennettitalean plants known from the Cretaceous of North America, Europe and Asia. They grew as cycad-like plants with a short trunk topped with a crown of leaves.

Cycadeoidea

Iranshahi.Amir Ali · CC BY-SA 4.0 · 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
BennettitaceaePBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At least 136 million years on record.

The record covers at least 237 Mya to 100.5 Mya. No occurrence read is dated outside 241.464 Mya to 66 Mya.

Middle Triassic — about 1 of 42 occurrencesLate Triassic — about 0 of 42 occurrencesEarly Jurassic — about 0 of 42 occurrencesMiddle Jurassic — about 1 of 42 occurrencesLate Jurassic — about 3 of 42 occurrencesLate JurassicEarly Cretaceous — about 25 of 42 occurrencesEarly CretaceousLate Cretaceous — about 12 of 42 occurrencesLate CretaceousPaleocene — about 0 of 42 occurrences245–239 Mya — about 0.6 occurrences239–233 Mya — about 0.4 occurrences172–166 Mya — about 0.3 occurrences166–160 Mya — about 0.7 occurrences160–154 Mya — about 0.1 occurrences154–148 Mya — about 1 occurrence148–142 Mya — about 3 occurrences142–135 Mya — about 3 occurrences135–129 Mya — about 3 occurrences129–123 Mya — about 3 occurrences123–117 Mya — about 4 occurrences117–111 Mya — about 5 occurrences111–105 Mya — about 4 occurrences105–99 Mya — about 4 occurrences99–93 Mya — about 4 occurrences93–87 Mya — about 1 occurrence87–81 Mya — about 1 occurrence81–75 Mya — about 1 occurrence75–69 Mya — about 1 occurrence69–62 Mya — about 0.6 occurrences237 Mya100.5 Mya245 Mya62 Mya

42 occurrences of Cycadeoidea on record, most of them in the Early Cretaceous. 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

42 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

8 formations

Cretaceous — 43.43°N, 103.67°WCretaceous — 44.43°N, 103.67°WCretaceous — 43.43°N, 103.47°WCretaceous — 44.15°N, 103.31°WCretaceous — 44.41°N, 103.51°WCedar Mountain — 39.07°N, 110.99°WKamenka Suite — 49.10°N, 37.30°ECheyenne Sandstone — 37.45°N, 99.08°WMorrison — 39.24°N, 109.00°WArundel Clay — 39.05°N, 76.74°WBudden Canyon — 40.46°N, 122.56°WSage Junction — 42.96°N, 111.29°W

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The named rock units Cycadeoidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Cycadeoidea and its relatives

Early Cretaceous

Where Cycadeoidea and its relatives were recorded in the Early Cretaceous.

Found in the same rock

136 taxa

The Paleobiology Database records 11 sites for Cycadeoidea, 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

11 references

Each of the 42 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 content2

Picture of Cycadeoidea

Credit
Iranshahi.Amir Ali
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

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 itBennettitaceae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Buckland 1828