Flustrina
Searched as Ascophorina. The Paleobiology Database treats Flustrina as the accepted name.

jkirkhart35 · CC BY 2.0 · via Wikidata/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
- CheilostomataPBDB
- Diet
- suspension feederPBDB, for Cheilostomata
- Life habit
- epifaunalPBDB, for Cheilostomata
- Motility
- stationary, attachedPBDB, for Cheilostomata
- Vision
- blindPBDB, for Gymnolaemata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 432 million years on record.
The record covers at least 432.9 Mya to 11.7 ka. No occurrence read is dated outside 443.1 Mya to 0 Mya.
2,711 occurrences of Flustrina on record, most of them in the Miocene. 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
2,711 occurrences- Silurianunder 1%
- Devonianunder 1%
- Early Cretaceousunder 1%
- Late Cretaceous13%
- Paleocene5%
- Eocene17%
- Oligocene10%
- Miocene33%
- Pliocene10%
- Pleistocene9%
- 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
136 formations
- Korojon Formation93
- Crystal River Limestone Formation76
- Marianna Limestone Formation67
- Moodys Branch Formation · Jackson Group64
- Cayo Agua Formation · Bocas del Toro Group62
- Moin Formation · Limon Group49
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The named rock units Flustrina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 112 further formations hold fewer occurrences each and are not listed. 1,317 occurrences have no formation on record, which is common for older literature.
Flustrina and its relatives
MioceneWhere Flustrina and its relatives were recorded in the Miocene.
Found in the same rock
3,071 taxa- Lunulites67 sites
- Lentigodentalium48 sites
- Reussirella48 sites
- Varicorbula gibba47 sites
- Venus (Ventricoloidea) multilamella47 sites
- Turritella46 sites
- Elphidium45 sites
- Limopsis (Limopsis) aurita45 sites
- Limopsis44 sites
- Astarte (Astarte) radiata43 sites
- Spiroplectammina carinata42 sites
- Dentalium (Pseudantilis)41 sites
- Cyclocardia39 sites
- Saccella westendorpi39 sites
- Cibicides lobatulus38 sites
- Gouldia (Gouldia) minima38 sites
- Nonion36 sites
- Cibicides dutemplei35 sites
- Dentalina konincki35 sites
- Parvicardium35 sites
- Textularia gramen35 sites
- Yoldia (Yoldia) glaberrima35 sites
- Yoldiella34 sites
- Globulina gibba33 sites
The Paleobiology Database records at least 439 sites for Flustrina, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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
165 references- Fossil cheilostomatous polyzoa from south-west Victoria253
- North American early Tertiary Bryozoa191
- A paleobiotic survey of Caribbean faunas from the Neogene of the Isthmus of Panama167
- Late Eocene Zoogeography of the Eastern Gulf Coast Region155
- The Tertiary Cheilostomatous Polyzoa of New Zealand154
- Les bryozoaires cheilostomes du Néogène bétique (SE Espagne)130
- Die Fauna des marinen Miozäns von Kevelaer (Niederrhein). Band 2 Bivalvia, Scaphopoda, Cephalopoda, Bryozoa, Annelida, Brachiopoda114
- A bryozoan and foraminifera association from the Miocene of Podbrezice, south Moravia (Czech Republic): an environmental history103
- Bryozoa from the Maastrichtian Korojon Formation, Western Australia93
- New free-living bryozoans from the northwest European Chalk69
- New species of Tertiary Cheilostome Bryozoa from Victoria, Australia50
- Functional morphology and biofacies distribution of cheilostome Bryozoa in the Danian Stage (Paleocene)of southern Scandinavia42
Each of the 2,711 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. 153 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 Flustrina
- Source
- Wikidata/Commons
- Credit
- jkirkhart35
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
No 3D scan of Flustrina 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCheilostomata through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Levinsen 1909