Mathildidae
Mathildidae is a family of small sea snails, marine gastropod molluscs in the superfamily Mathildoidea of the informal group of the Lower Heterobranchia.

MNHN, Paris - Peter MASSICARD · CC BY 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
- MathildoideaPBDB
- Diet
- carnivorePBDB
- Life habit
- epifaunalPBDB
- Motility
- actively mobilePBDB
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 241 million years on record.
The record covers at least 241.464 Mya to 11.7 ka. No occurrence read is dated outside 247 Mya to 0 Mya.
686 occurrences of Mathildidae 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
686 occurrences- Middle Triassicunder 1%
- Late Triassic7%
- Early Jurassic2%
- Middle Jurassic18%
- Early Cretaceous15%
- Late Cretaceous15%
- Paleocene10%
- Eocene24%
- Oligocene1%
- Miocene4%
- Pliocene1%
- Pleistoceneunder 1%
- 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
115 formations
- Ripley Formation · Selma Group32
- Cook Mountain Formation · Claiborne Group31
- Reklaw Formation · Claiborne Group26
- Lellinge Greensand Formation20
- Weches Formation · Claiborne Group17
- Lisbon Formation · Claiborne Group16
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The named rock units Mathildidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 91 further formations hold fewer occurrences each and are not listed. 256 occurrences have no formation on record, which is common for older literature.
Mathildidae and its relatives
EoceneWhere Mathildidae and its relatives were recorded in the Eocene.
Found in the same rock
2,460 taxa- Turritella46 sites
- Gastropoda42 sites
- Acteon40 sites
- Cadulus36 sites
- Euspira rectilabrum33 sites
- Nuculana31 sites
- Turritella trilira30 sites
- Anomia argentaria29 sites
- Promathildia orthocosta26 sites
- Sulcoactaeon26 sites
- Tornatellaea gazdzickii26 sites
- Cymbophora24 sites
- Cyprimeria24 sites
- Dentalium24 sites
- Paladmete cancellaria24 sites
- Gegania23 sites
- Tuba seriaformis23 sites
- Veniella conradi23 sites
- Buvignieria schroederi22 sites
- Pseudomelania22 sites
- Striarca22 sites
- Zebina dziki22 sites
- Granocardium21 sites
- Syncyclonema21 sites
The Paleobiology Database records 397 sites for Mathildidae, and this reads 240 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
127 references- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals78
- Faunal dynamics of juvenile gastropods and associated organisms across the Valanginian transgression-regression cycle in central Poland68
- Heterostropha (Gastropoda) aus dem Dogger Norddeutschlands und Nordpolens. I. Mathildoidea (Mathildidae)66
- Faunal dynamics of Gastropods in the Bathoninan (Middle Jurrasic) ore-bearing clays at Gnaszyn, Krakow-Silesia Homocline, Poland28
- Archeogastropoda, Mesogastropoda and stratigraphy of the Ripley, Owl Creek, and Prairie Bluff Formations28
- Mesozoic invertebrate faunas of Peru25
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda23
- The Selandian (Paleocene) mollusc fauna from Copenhagen, Denmark: the Poul Harder 1920 collection20
- The evolution of conch ontogeny in Mesozoic open sea gastropods19
- Faunal stability and environmental change in the middle Eocene Gulf Coastal Plain (PhD Thesis, Harvard University)17
- The Molluscan Macrofauna of the Reklaw Formation, Marquez Member (Eocene: Lower Claibornian), in Texas14
- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf14
Each of the 686 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. 115 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 Mathildidae
- Source
- Wikipedia/Commons
- Credit
- MNHN, Paris - Peter MASSICARD
- Licence
- CC BY 4.0
- 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, “Mathildidae”
- 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 itMathildoidea through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Dall 1889