Stigmaulax
Stigmaulax is a genus of predatory sea snails, marine gastropod molluscs in the subfamily Naticinae of the family Naticidae, the moon snails.

James St. John · 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
- NaticinaePBDB
- Diet
- carnivorePBDB, for Naticidae
- Life habit
- semi-infaunalPBDB, for Naticidae
- Motility
- actively mobilePBDB, for Naticidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 33 million years on record.
The record covers at least 33.9 Mya to 129 ka. No occurrence read is dated outside 37.71 Mya to 11.7 ka.
229 occurrences of Stigmaulax 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
229 occurrences- Eoceneunder 1%
- Oligoceneunder 1%
- Miocene78%
- Pliocene20%
- Pleistocene2%
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
37 formations
- Gatun Formation58
- Cercado Formation39
- Gurabo Formation31
- Shoal River Formation · Alum Bluff Group9
- Nancy Point Formation · Bocas del Toro Group8
- Cayo Agua Formation · Bocas del Toro Group6
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The named rock units Stigmaulax has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 further formations hold fewer occurrences each and are not listed. 6 occurrences have no formation on record, which is common for older literature.
Stigmaulax and its relatives
MioceneWhere Stigmaulax and its relatives were recorded in the Miocene.
Found in the same rock
2,072 taxa- Architectonica nobilis32 sites
- Polystira25 sites
- Callocardia (Agriopoma) gatunensis21 sites
- Lirophora (Panchione) mactropsis21 sites
- Tectonatica19 sites
- Oliva gatunensis18 sites
- Polinices stanislasmeunieri18 sites
- Anadara17 sites
- Anadara (Rasia) dariensis dariensis17 sites
- Conus molis17 sites
- Naticarius17 sites
- Bivetiella dariena16 sites
- Cadulus (Platyschides)16 sites
- Bellucina actinus15 sites
- Lepidopecten scissuratus15 sites
- Natica bolus15 sites
- Varicorbula disparilis15 sites
- Arcinella arcinella14 sites
- Psammacoma gatunensis14 sites
- Antillophos (Rhipophos) metuloides13 sites
- Cancellaria13 sites
- Gadilopsis13 sites
- Metula gabbi13 sites
- Semicassis reclusa13 sites
The Paleobiology Database records 85 sites for Stigmaulax, 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
30 references- Unpublished notes on Caribbean collection of the Naturhistorisches Museum Basel72
- Geology and Paleontology of Canal Zone and adjoining parts of Panama.36
- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions32
- A paleobiotic survey of Caribbean faunas from the Neogene of the Isthmus of Panama26
- Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia7
- Santo Domingo type sections and fossils7
- Naticidae (Mollusca: Mesogastropoda) from the Neogene of northwestern Ecuador5
- The Molluscan Fauna of the Alum Bluff Group of Florida5
- Localidades fossiliferas da Formacao Pirabas (Mioceno Inferior)4
- Marine Miocene and related deposits of North Colombia4
- Unpublished notes on Caribbean collection of Jack and Winifred Gibson-Smith, Naturhistorisches Museum Basel3
- Olsson, 19643
Each of the 229 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. 18 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 Stigmaulax
- Source
- Wikipedia/Commons
- Credit
- James St. John
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Source
- Wikipedia, “Stigmaulax”
- 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 itNaticinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Morch 1852)