Actinostroma expansum

Yale Peabody Museum · CC0 · via GBIF. 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
- ActinostromaPBDB
- Diet
- suspension feeder, photosymbioticPBDB, for Stromatoporoidea
- Life habit
- epifaunalPBDB, for Stromatoporoidea
- Motility
- stationary, attachedPBDB, for Stromatoporoidea
- Vision
- blindPBDB, for Stromatoporoidea
Time the record covers
At least 1 million years on record.
The record covers at least 383.4 Mya to 382.31 Mya. No occurrence read is dated outside 387.95 Mya to 372.15 Mya.
9 occurrences of Actinostroma expansum on record, most of them in the Devonian. 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
9 occurrences- Devonian100%
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
6 formations
- Kowala Formation · Set A Group4
- Dawson Bay Formation1
- Souris River Formation1
- Tungkangling Formation1
- Nam Can Formation1
- Taboumakhlouf Formation1
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The named rock units Actinostroma expansum has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Actinostroma expansum and its relatives
DevonianWhere Actinostroma expansum and its relatives were recorded in the Devonian.
Found in the same rock
116 taxa- Aulopora2 sites
- Clathrocoilona2 sites
- Conodonta2 sites
- Hermatostroma2 sites
- Hermatostroma haultainense2 sites
- Hexagonaria2 sites
- Ostracoda2 sites
- Thamnophyllum2 sites
- Thamnopora2 sites
- Trupetostroma2 sites
- Acanthophyllum1 site
- Alveolites1 site
- Alveolites tenuissimus1 site
- Ambothyris1 site
- Amphipora ramosa1 site
- amphiporida indet.1 site
- Anostylostroma1 site
- Arctostroma1 site
- Athyris1 site
- Aulocystis1 site
- Auloporidae1 site
- Bainbridgia1 site
- Bensbergia arculata1 site
- Bivalvia1 site
The Paleobiology Database records 4 sites for Actinostroma expansum, 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
5 references- Morphogenesis and systematics of the Devonian Stromatoporoidea from the Holy Cross Mountains, Poland4
- Stromatoporoids from the Devonian (Eifelian to Lowest Frasnian) of Manitoba, Canada2
- At the southern limits of the Devonian reef zone: Palaeoecology of the Aferdou el Mrakib reef (Givetian, eastern Anti‐Atlas, Morocco)1
- Middle Devonian stromatoporoids from mountlike superimposed bioherms along carbonate platform margin from Liuzhai, Nandan, Guangxi1
- Tong-Dzuy et al., 19881
Each of the 9 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 Actinostroma expansum
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itActinostroma through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Hall and Whitfield 1873)