Bellerophontidae
The Bellerophontidae are an extinct family of specialized globose bellerophontids, Paleozoic and early Triassic mollusks of the class Gastropoda.

William Bullock Clark (1860-1917) et al. · Public Domain · 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
- BellerophontoideaPBDB
- Diet
- detritivorePBDB
- Life habit
- low-level epifaunalPBDB
- Motility
- slow-movingPBDB
- Vision
- limitedPBDB, for Gastropoda
- Environment
- marinePBDB, for Bellerophontida
Time the record covers
At least 240 million years on record.
The record covers at least 477.1 Mya to 237 Mya. No occurrence read is dated outside 486.85 Mya to 227.3 Mya.
2,095 occurrences of Bellerophontidae on record, most of them in the Permian. 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
2,095 occurrences- Ordovician9%
- Silurian5%
- Devonian13%
- Carboniferous33%
- Permian37%
- Early Triassic2%
- Middle Triassicunder 1%
- Late Triassicunder 1%
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
438 formations
- Chhidru Formation208
- Second Abden Shale Formation60
- Allegheny Formation54
- Wargal Formation49
- Graham Formation · Cisco Group42
- Lexington Limestone Formation36
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The named rock units Bellerophontidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 414 further formations hold fewer occurrences each and are not listed. 139 occurrences have no formation on record, which is common for older literature.
Bellerophontidae and its relatives
PermianWhere Bellerophontidae and its relatives were recorded in the Permian.
Found in the same rock
2,370 taxa- Crinoidea79 sites
- Paraparchites44 sites
- Retispira decussatus44 sites
- Eomarginifera longispinus38 sites
- Bivalvia36 sites
- Crurithyris urei36 sites
- Glomospira36 sites
- Rastidiscus sp.36 sites
- Bucanopsis33 sites
- Actinopteria31 sites
- Echinoidea30 sites
- Bairdia28 sites
- Glabrocingulum28 sites
- Bryozoa27 sites
- Lingularia squamiformis26 sites
- Schizophoria26 sites
- Aclisina pulchra intermedia25 sites
- Composita25 sites
- Nuculites25 sites
- Ortonia25 sites
- Crurithyris24 sites
- Schizophoria resupinata24 sites
- Gastropoda23 sites
- Lingula22 sites
The Paleobiology Database records at least 1,306 sites for Bellerophontidae, and this reads 240 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
415 references- Brachiopoda and Mollusca from the Productus limestones of the Salt Range231
- Permian Gastropoda of the southwestern United States. 3. Bellerophontacea and Patellacea146
- The paleoecology of a Lower Carboniferous marine transgression61
- Allegheny fossil invertebrates from eastern Ohio: Gastropoda53
- Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati Arch region51
- The surficial geology, paleontology, and paleoecology of the Finis Shale (Pennsylvanian, Lower Virgilian) in Jack County, Texas43
- Productus Limestone Fossils, Part II40
- The British and Belgian Carboniferous Bellerophontidae38
- Desmoinesian Brachiopoda and Mollusca from southwest Missouri25
- Yao et al., 198023
- Perner, 190323
- Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023)22
Each of the 2,095 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. 403 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 Bellerophontidae
- Source
- Wikipedia/Commons
- Credit
- William Bullock Clark (1860-1917) et al.
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Bellerophontidae 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 itBellerophontoidea through timeFormations of the PermianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. M'Coy 1851