Ceratopteris
Ceratopteris is the only genus among homosporous ferns that is exclusively aquatic. It is pan-tropical and classified in the Parkerioideae subfamily of the family Pteridaceae.

Carlosar · 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
- ParkerioideaePBDB
- Diet
- "photoautotroph"PBDB, for Streptophyta
Time the record covers
At least 23 million years on record.
The record covers at least 23.04 Mya to 11.7 ka. No occurrence read is dated outside 66 Mya to 0 Mya.
8 occurrences of Ceratopteris on record. The Paleobiology Database records this as a living group. 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
8 occurrencesThese 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
2 formations
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The named rock units Ceratopteris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.
Found in the same rock
120 taxa- Pteris5 sites
- Arecaceae4 sites
- Poaceae4 sites
- <Fern>3 sites
- Ilex3 sites
- Plantae3 sites
- Rhizophora3 sites
- Alsophila2 sites
- Ctenitis sp.2 sites
- Cyathea2 sites
- Lycopodium2 sites
- Polypodiaceae2 sites
- Abies1 site
- Abutilon1 site
- Accipiter1 site
- Acrostichum1 site
- Adiantum1 site
- Aesculus1 site
- Alchornea1 site
- Alnus1 site
- Anacardiaceae1 site
- Annona1 site
- Apiaceae1 site
- Artemisia1 site
The Paleobiology Database records 8 sites for Ceratopteris, 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- Studies in Neotropical Paleobotany. X. The Pliocene communities of Panama - Composistion, numerical representations, and paleocommunity paleoenvironmental reconstructions.2
- A Catalogue of Indian Fossil Plants2
- Exceptionally well preserved late Quaternary plant and vertebrate fossils from a blue hole on Abaco, The Bahamas1
- A Catalogue of Fossil Plants from India Part 6: Cenozoic (Quaternary) Palynology and Palaeobotany1
- Studies in Neotropical Paleobotany. VI. The Lower Miocene Communities of Panama - The Cucaracha Formation.1
- Fossil macrospores and massulae of Salvinia natans from the Pliocene and the Quaternary sediments in the Kinki and Tokai districts, Japan1
Each of the 8 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 Ceratopteris
- Source
- Wikipedia/Commons
- Credit
- Carlosar
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Ceratopteris was found in MorphoSource and Sketchfab.
Smithsonian Open Access 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 itParkerioideae through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Brongniart 1821