Azolla
via iDigBio · CC0 · via iDigBio. 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
- SalviniaceaePBDB
- Diet
- "photoautotroph"PBDB, for Streptophyta
Time the record covers
At least 93 million years on record.
The record covers at least 93.9 Mya to 11.7 ka. No occurrence read is dated outside 100.5 Mya to 0 Mya.
292 occurrences of Azolla on record, most of them in the Paleocene. 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
292 occurrences- Late Cretaceous28%
- Paleocene31%
- Eocene6%
- Oligocene11%
- Miocene21%
- Pliocene1%
- Pleistocene1%
- Holocene1%
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
39 formations
- Fort Union Formation54
- Hell Creek Formation · Montana Group39
- La Colonia Formation15
- Scollard Formation · Edmonton Group8
- Lago Colhué Huapi Formation · Chubut Group8
- Chenque Formation5
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The named rock units Azolla has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 further formations hold fewer occurrences each and are not listed. 105 occurrences have no formation on record, which is common for older literature.
Azolla and its relatives
PaleoceneWhere Azolla and its relatives were recorded in the Paleocene.
Found in the same rock
1,208 taxa- Deltoidospora46 sites
- Laevigatosporites44 sites
- Gleicheniidites42 sites
- Cyathidites41 sites
- Pityosporites40 sites
- Cycadopites37 sites
- Triporopollenites37 sites
- Penetetrapites35 sites
- Tricolpites35 sites
- Taxodiaceaepollenites34 sites
- Ulmipollenites krempii33 sites
- Ghoshispora32 sites
- Schizophacus sp.31 sites
- Reticuloidosporites30 sites
- Arecipites29 sites
- Osmundacidites29 sites
- Pandaniidites typicus29 sites
- Stereisporites28 sites
- Kurtzipites trispissatus27 sites
- Pediastrum27 sites
- Wodehouseia spinata26 sites
- Aquilapollenites25 sites
- Ericaceoipollenites sp.24 sites
- Algae22 sites
The Paleobiology Database records 128 sites for Azolla, 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
64 references- Biostratigraphy of selected K/T boundary sections in southwestern North Dakota, USA: toward a refinement of palynological identification criteria80
- Tretichnye Flory Zapadnoi Sibiri60
- Die mittelmiozaenen und obermiozaenen Floren aus der Meuroer und Raunoer Folge in der Lausitz. III. Fundstellen und Palaeobiologie18
- Some Paleocene megaspores and other small fossils12
- Megaspores and other palynomorphs of the Brazeau Formation (Upper Cretaceous), Nordegg Area, Alberta10
- Water fern spores (Salviniales) from the Late Cretaceous of Patagonia, Argentina8
- A contribution to the Early Tertiary fossil record of the Salviniaceae5
- Salviniales from the Late Cretaceous of the Golfo San Jorge Basin4
- Palinomorph assemblage of the Chenque Formation, Late Oligocene?- Miocene from Golfo San Jorge Basin, Patagonia, Argentina, Part 1: terrestrial Algae, trilete and monolete spores4
- Estudio Palinológico de la Formación Pedro Luro (?Maastrichtiano-Paleoceno) en la Cuenca del Colorado, República Argentina. Parte 1: Esporas triletes, Laevigati, Murornati, Tricassati, Cingulati y Zonati4
- A Catalogue of Fossil Plants from India Part 4: Cenozoic (Tertiary) Megafossils4
- Spores from the K–Pg boundary of the La Colonia Formation, Patagonia, Argentina3
Each of the 292 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. 52 further references are not listed. 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 Azolla
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Azolla 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itSalviniaceae through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Lamarck 1783