Galaxea fascicularis
Galaxea fascicularis is a species of colonial stony coral in the family Euphylliidae, commonly known as octopus coral, fluorescence grass coral, and galaxy coral among various vernacular names.

Diego Delso · 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
- GalaxeaPBDB
- Diet
- photosymbiotic, suspension feederPBDB, for Euphylliidae
- Life habit
- colonial, clonalPBDB, for Euphylliidae
- Motility
- stationary, attachedPBDB, for Euphylliidae
- Vision
- blindPBDB, for Anthozoa
- Environment
- marinePBDB, for Scleractinia
Time the record covers
At least 15 million years on record.
The record covers at least 15.98 Mya to 11.7 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.
82 occurrences of Galaxea fascicularis on record, most of them in the Pleistocene. 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
82 occurrences- Miocene6%
- Pliocene6%
- Pleistocene79%
- Holocene9%
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
7 formations
- Sobe Formation · Ryukyu Group3
- Salayar Formation3
- Naha Formation · Ryukyu Group2
- Ghasr Ghand Formation1
- Riukiu Limestone Formation1
- Era Beds Formation1
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The named rock units Galaxea fascicularis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 70 occurrences have no formation on record, which is common for older literature.
Galaxea fascicularis and its relatives
PleistoceneWhere Galaxea fascicularis and its relatives were recorded in the Pleistocene.
Found in the same rock
512 taxa- Acropora20 sites
- Porites19 sites
- Favia17 sites
- Montipora16 sites
- Goniastrea retiformis13 sites
- Platygyra daedalea11 sites
- Goniastrea stelligera10 sites
- Echinopora9 sites
- Goniastrea9 sites
- Leptoria phrygia9 sites
- Dipsastraea pallida8 sites
- Dipsastraea speciosa8 sites
- Lobophyllia corymbosa8 sites
- Platygyra8 sites
- Stylophora pistillata8 sites
- Acanthastrea echinata7 sites
- Cyphastrea7 sites
- Cyphastrea microphthalma7 sites
- Cyphastrea serailia7 sites
- Hydnophora microconos7 sites
- Pavona7 sites
- Pocillopora7 sites
- Pocillopora damicornis7 sites
- Pocillopora verrucosa7 sites
The Paleobiology Database records 40 sites for Galaxea fascicularis, 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
32 references- Field work Sinai15
- Ecological stratification in the Pleistocene coral reefs of the Kenya coast11
- Symbiosis in the Fossil Record: Eocene Nummulites and Pleistocene Reefs of Egypt6
- Variations in Pleistocene coral assemblages in space and time in southern and northern central Ryukyu Islands, Japan5
- Succession and diversity in the Pleistocene coral reefs of the Kenya Coast5
- Facies, Fossil Record, and Age of Pleistocene Reefs from the Red Sea (Saudi Arabia)4
- Geological and geographical distribution of reef-corals in Japan4
- Evolutionary dynamics of Indo-Pacific reef corals throughout the Neogene3
- Contributions to the Pleistocene coral reefs of the Red Sea coast, Egypt3
- Recurrent patterns of coral community and sediment facies development through successive phases of Holocene inner-shelf reef growth and decline2
- Paleontology and depositional environments of the Pleistocene coral reefs of the Gulf of Suez, Egypt2
- Response of reef coral communities to sea-level rise: a Holocene model from Mauritius (western Indian Ocean)2
Each of the 82 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. 20 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 Galaxea fascicularis
- Source
- Wikipedia/Commons
- Credit
- Diego Delso
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Galaxea fascicularis was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itGalaxea through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Linnaeus 1767)