Jania
Jania is a genus of red macroalgae with hard, calcareous, branching skeletons in the family Corallinaceae.

Massimiliano De Martino · CC BY 3.0 · 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
- CorallinoideaePBDB
- Diet
- "photoautotroph"PBDB, for Corallinaceae
- Life habit
- epifaunal, clonalPBDB, for Corallinaceae
- Motility
- stationary, attached, epibiontPBDB, for Corallinaceae
- Environment
- marinePBDB, for Corallinaceae
Time the record covers
At least 61 million years on record.
The record covers at least 61.66 Mya to 11.7 ka. No occurrence read is dated outside 66 Mya to 0 Mya.
175 occurrences of Jania 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
175 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
35 formations
- Sylhet Formation Formation22
- Sinjar Formation16
- Lakadong Formation · Shlhet Limestone Group12
- Pinczow Formation5
- Sylhet Limestone Formation5
- Zongpu Formation5
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The named rock units Jania has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 further formations hold fewer occurrences each and are not listed. 52 occurrences have no formation on record, which is common for older literature.
Jania and its relatives
PaleoceneWhere Jania and its relatives were recorded in the Paleocene.
Found in the same rock
607 taxa- Corallina44 sites
- Distichoplax biserialis35 sites
- Lithothamnion33 sites
- Discocyclina31 sites
- Miliolida28 sites
- Miscellanea27 sites
- Lithophyllum26 sites
- Polystrata alba25 sites
- Distichoplax23 sites
- Mesophyllum23 sites
- Lithoporella19 sites
- Sporolithon18 sites
- Nubecularia14 sites
- Amphiroa13 sites
- Lithoporella melobesioides13 sites
- Acicularia12 sites
- Rotalia12 sites
- Serpula12 sites
- Halimeda11 sites
- Dasycladales10 sites
- Sporolithon lugeonii10 sites
- Textularia10 sites
- Cymopolia9 sites
- Cymopolia kurdistanensis9 sites
The Paleobiology Database records 127 sites for Jania, 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
48 references- The Enigmatic Paleocene-Eocene coralline Distichoplax: Approaching the structural complexities, ecological affinities and extinction hypotheses22
- A study of biostratigraphy of Sinjar Formation in selected sections from northern Iraq16
- Contribution to the knowledge of the Palaeogene reef-complexes of the Myjava-Hricov-Haligovka Zone (West Carpathians)13
- Calcareous algae from the Lakadong Formation of the South Shillong Plateau, NE India10
- Coralline Algae at the Paleocene/Eocene Thermal Maximum in the Southern Pyrenees (N Spain)9
- Dominance of coralline algae in the South China Sea: Insights into their responses to paleoceanographic events over the last 20 million years8
- Calcareous algae from the Miocene of Lebanon6
- Fossil and recent calcareous algae from Guam6
- Red algae from the Pinczow limestones (middle Miocene, Swietokrzyskie mountains, Poland)5
- Paleo-water depth variations since the Pliocene as recorded by coralline algae in the South China Sea4
- Facies analysis and paleoenvironmental interpretation of Piacenzian carbonate deposits from the Guitar Formation of Car Nicobar Island, India4
- An occurrence of Paleocene reefal limestone in the Zwieselalm Formation of Gosau (Upper Austria)4
Each of the 175 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. 36 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 Jania
- Source
- Wikipedia/Commons
- Credit
- Massimiliano De Martino
- Licence
- CC BY 3.0
- Commercial use
- the licence allows it
No 3D scan of Jania 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 itCorallinoideae through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Lamoroux 1812