Murex
Murex is a genus of medium to large sized predatory tropical sea snails. They are carnivorous marine gastropod molluscs in the family Muricidae, commonly called "murexes" or "rock snails".

Samuel Chow from Boston, USA · CC BY 2.0 · 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
- MuricinaePBDB
- Diet
- carnivorePBDB, for Muricidae
- Life habit
- epifaunalPBDB, for Muricidae
- Motility
- actively mobilePBDB, for Muricidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 119 million years on record.
The record covers at least 119.57 Mya to 11.7 ka. No occurrence read is dated outside 121.4 Mya to 0 Mya.
305 occurrences of Murex 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
305 occurrences- Early Cretaceous2%
- Late Cretaceousunder 1%
- Paleocene3%
- Eocene26%
- Oligocene5%
- Miocene31%
- Pliocene13%
- Pleistocene19%
- Holoceneunder 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
82 formations
- Chipola Formation · Alum Bluff Group20
- Cook Mountain Formation · Claiborne Group17
- Togopi Formation14
- Weches Formation · Claiborne Group11
- Cowlitz Formation8
- Arcadia Formation · Hawthorn Group7
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The named rock units Murex has been recovered from, largest first. Drawn where the rock is now, not where it formed. 58 further formations hold fewer occurrences each and are not listed. 87 occurrences have no formation on record, which is common for older literature.
Murex and its relatives
MioceneWhere Murex and its relatives were recorded in the Miocene.
Found in the same rock
3,516 taxa- Turritella39 sites
- Ficus29 sites
- Architectonica26 sites
- Microdrillia26 sites
- Pyramidella26 sites
- Tellina26 sites
- Corbula24 sites
- Calyptraea (Trochita) aperta23 sites
- Athleta petrosa22 sites
- Conus22 sites
- Gemmula (Coronia)22 sites
- Sinum22 sites
- Acteon21 sites
- Bonellitia21 sites
- Cadulus21 sites
- Nucula21 sites
- Polinices21 sites
- Mitrella20 sites
- Nuculana20 sites
- Ostrea20 sites
- Ancilla staminea19 sites
- Dentalium19 sites
- Natica19 sites
- Venericardia19 sites
The Paleobiology Database records 158 sites for Murex, 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
105 references- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals26
- Recherches sur le Neogene et le Quaternaire marins de la cote Atlantique du Maroc16
- Cenozoic Muricidae of the western Atlantic region: Part 1 - Murex sensus stricto15
- Preliminary notes on fossil records of East Malaysia and Brunei14
- Suite des mémoires sur les fossiles des environs de Paris14
- Die Fauna des marinen Miozäns von Kevelaer (Niederrhein)13
- Faunal stability and environmental change in the middle Eocene Gulf Coastal Plain (PhD Thesis, Harvard University)10
- The Molluscan Fauna of the Alum Bluff Group of Florida10
- Cenozoic fossil mollusks from Western Pacific Islands; Gastropods (Eratoidae through Harpidae)9
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda9
- Lower to Middle Miocene Mollusc assemblages from the Torino Hills (NW Italy): Synthesis of new data and chronostratigraphical arrangement7
- Faunal analysis of the Upper Miaoli Group in the Tunghsiao area, Miaoli Province, Formosa, China7
Each of the 305 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. 93 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 Murex
- Source
- Wikipedia/Commons
- Credit
- Samuel Chow from Boston, USA
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- The Watt Institution
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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
- Source
- Wikipedia, “Murex”
- 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 itMuricinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Linnaeus 1758