Hexaplex
Hexaplex is a genus of medium-sized to large sea snails, marine gastropod mollusks in the subfamily Muricinae of the family Muricidae, the murex shells or rock snails.

Didier Descouens · 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
- MuricidaePBDB
- Diet
- carnivorePBDB, for Muricidae
- Life habit
- epifaunalPBDB, for Muricidae
- Motility
- actively mobilePBDB, for Muricidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 61 million years on record.
The record covers at least 61.66 Mya to 11.7 ka. No occurrence read is dated outside 66 Mya to 0 Mya.
182 occurrences of Hexaplex on record, most of them in the Eocene. 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
182 occurrencesThese 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
32 formations
- Cook Mountain Formation · Claiborne Group32
- Moodys Branch Formation · Jackson Group29
- Chipola Formation · Alum Bluff Group16
- Wautubbee Formation · Claiborne Group12
- Tamiami Formation · Okeechobee Group9
- Weches Formation · Claiborne Group9
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The named rock units Hexaplex has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 further formations hold fewer occurrences each and are not listed. 20 occurrences have no formation on record, which is common for older literature.
Hexaplex and its relatives
EoceneWhere Hexaplex and its relatives were recorded in the Eocene.
Found in the same rock
1,833 taxa- Turritella25 sites
- Ficus20 sites
- Cadulus16 sites
- Athleta petrosa15 sites
- Bullata semen15 sites
- Hipponix15 sites
- Conus isomatratus14 sites
- Conus sulculus14 sites
- Microdrillia14 sites
- Mitrella14 sites
- Pyramidella14 sites
- Retusa galba14 sites
- Architectonica13 sites
- Bonellitia13 sites
- Hemicerithium cossmanni13 sites
- Oliva (Omogymna) martensii13 sites
- Poirieria (Panamurex) mauryae13 sites
- Pseudoliva vetusta13 sites
- Sinum13 sites
- Calyptraea (Trochita) aperta12 sites
- Conus chipolanus12 sites
- Conus demiurgus12 sites
- Corbula (Caryocorbula) alabamiensis12 sites
- Gemmula (Coronia)12 sites
The Paleobiology Database records 99 sites for Hexaplex, and this reads all 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
35 references- Cenozoic Muricidae of the Western Atlantic region. Part IV - Hexaplex and Murexiella33
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda31
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals29
- Invertebrate Macropaleontolgy of the Clarke County Mississippi Area18
- Faunal stability and environmental change in the middle Eocene Gulf Coastal Plain (PhD Thesis, Harvard University)11
- Cenozoic Muricidae of the western Atlantic region, Part VIII - Murex ss, Haustellum, Chicoreus, and Hexaplex; additions and corrections9
- The Early Pliocene Gastropoda (Mollusca) of Estepona, Southern Spain. Part 7: Muricidae6
- Lower to Middle Miocene Mollusc assemblages from the Torino Hills (NW Italy): Synthesis of new data and chronostratigraphical arrangement4
- Muricidae (Mollusca: Gastropoda) of the Esmeraldas Beds, northwestern Ecuador4
- Petuch and Roberts, 20073
- Mollusca of the Moodys Branch Formation, Mississippi3
- The molluscan fauna of the Pliocene strata underlying the Adelaide Plains. Part V - Gastropoda (Eratoidae to Scaphandridae)3
Each of the 182 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. 23 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 content2
Picture of Hexaplex
- Source
- Wikipedia/Commons
- Credit
- Didier Descouens
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Licence
- CC0 Public Domain
- Commercial use
- the licence allows it
The description on this site
- Source
- Wikipedia, “Hexaplex”
- 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 itMuricidae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Perry 1811)