Hercorhyncus (Haplovoluta)
Searched as Haplovoluta. The Paleobiology Database treats Hercorhyncus (Haplovoluta) as the accepted name.

via iDigBio · CC0 · via iDigBio. 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
- HercorhyncusPBDB
- Diet
- carnivorePBDB, for Fasciolariidae
- Life habit
- epifaunalPBDB, for Fasciolariidae
- Motility
- actively mobilePBDB, for Fasciolariidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 10 million years on record.
The record covers at least 72.2 Mya to 61.66 Mya. No occurrence read is dated outside 83.6 Mya to 59.24 Mya.
18 occurrences of Hercorhyncus (Haplovoluta) on record, most of them in the Late Cretaceous. 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
18 occurrences- Late Cretaceous83%
- Paleocene17%
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
- Ripley Formation · Selma Group7
- Providence Formation4
- Agatdal Formation3
- Prairie Bluff Formation1
- Severn Formation1
- Corsicana Marl Formation1
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The named rock units Hercorhyncus (Haplovoluta) has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Hercorhyncus (Haplovoluta) and its relatives
Late CretaceousWhere Hercorhyncus (Haplovoluta) and its relatives were recorded in the Late Cretaceous.
Found in the same rock
432 taxa- Euspira rectilabrum11 sites
- Gyrodes (Sohlella) spillmani10 sites
- Paladmete cancellaria10 sites
- Turritella trilira10 sites
- Anomia argentaria8 sites
- Crassatella vadosa8 sites
- Drilluta distans8 sites
- Bellifusus curvicostatus7 sites
- Camptonectes bubonis7 sites
- Creonella subangulata7 sites
- Cymbophora7 sites
- Gyrodes supraplicatus7 sites
- Nemodon eufaulensis7 sites
- Syncyclonema7 sites
- Turritella vertebroides7 sites
- Creonella triplicata6 sites
- Cyprimeria6 sites
- Exogyra (Exogyra) costata6 sites
- Fulgerca attenuata6 sites
- Graciliala calcaris6 sites
- Hercorhyncus (Hercorhyncus) tippanus6 sites
- Laxispira lumbricalis6 sites
- Nuculana6 sites
- Serpula6 sites
The Paleobiology Database records 13 sites for Hercorhyncus (Haplovoluta), 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
8 references- Archeogastropoda, Mesogastropoda and stratigraphy of the Ripley, Owl Creek, and Prairie Bluff Formations5
- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain4
- Paleocene gastropods from Nûgssuaq, West Greenland3
- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf2
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals1
- Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain1
- Gastropods from the coffee Sand (Upper Cretaceous) of Mississippi1
- The fauna of the Ripley formation on Coon creek, Tennessee1
Each of the 18 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Hercorhyncus (Haplovoluta)
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Hercorhyncus (Haplovoluta) 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHercorhyncus through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Wade 1918)