Laevidentalium
Laevidentalium is a genus of molluscs belonging to the family Laevidentaliidae.

Sowerby, 1860 · CC0 · via Wikidata/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
- LaevidentaliidaePBDB
- Diet
- deposit feederPBDB, for Dentaliida
- Life habit
- semi-infaunalPBDB, for Dentaliida
- Motility
- slow-movingPBDB, for Dentaliida
- Vision
- blindPBDB, for Scaphopoda
Time the record covers
At least 339 million years on record.
The record covers at least 339.9 Mya to 129 ka. No occurrence read is dated outside 346.7 Mya to 11.7 ka.
192 occurrences of Laevidentalium 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
192 occurrences- Carboniferous2%
- Early Triassic1%
- Middle Triassic7%
- Late Triassicunder 1%
- Early Jurassic17%
- Middle Jurassic19%
- Late Cretaceousunder 1%
- Paleocene4%
- Eocene21%
- Oligocene2%
- Miocene20%
- Pliocene3%
- Pleistocene3%
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
49 formations
- Llajas Formation16
- Qingyan Formation12
- Kalchreuth Formation11
- Drazinda Formation8
- Gatun Formation6
- Chipola Formation · Alum Bluff Group4
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The named rock units Laevidentalium has been recovered from, largest first. Drawn where the rock is now, not where it formed. 25 further formations hold fewer occurrences each and are not listed. 76 occurrences have no formation on record, which is common for older literature.
Laevidentalium and its relatives
EoceneWhere Laevidentalium and its relatives were recorded in the Eocene.
Found in the same rock
2,566 taxa- Parallelodon36 sites
- Cylindrobullina33 sites
- Kalchreuthia frankei33 sites
- Levipleura blainvillei33 sites
- Palaeoneilo galatea33 sites
- Oxytoma32 sites
- Ovactaeonina kalchreuthensis30 sites
- Ovactaeonina sendelbachensis30 sites
- Palaeonucula30 sites
- Scaphopoda29 sites
- Francocerithium kochi26 sites
- Nucinella26 sites
- Ovactaeonina franconica26 sites
- Prodentalium26 sites
- Rollieria26 sites
- Eucyclus25 sites
- Nicaniella (Nicaniella)24 sites
- Ovactaeonina abdominiformis24 sites
- Cuneirhynchia23 sites
- Neodonaldina sinuata23 sites
- Limopsis22 sites
- Colostracon (Ovactaeonina)21 sites
- Lucinidae21 sites
- Plicatula spinosa19 sites
The Paleobiology Database records 156 sites for Laevidentalium, 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
54 references- Faunal dynamics of bivalves and scaphopods in the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland36
- Palökologie von Benthos-Gemeinschaften im oberen Pliensbach (Amaltheenton) von Kalchreuth (Mittelfranken)22
- Megapaleontology of the Eocene Llajas Formation, Simi Valley, California16
- Fossilvergesellschaftungen, Paläoökologie und paläosynökologische Entwicklung im Oberen Anisium (Mittlere Trias) von Qingyan, insbesondere Bangtoupo, Provinz Guizhou, Südwestchina12
- Palökologie von Benthosgemeinschaften im Pliensbach von Unterstürmig und Buttenheim (Mittelfranken)11
- El genero Cancellaria en el Mioceno de Chile con descripcion de cuatro especies nuevas (Gaastropoda: Cancellariidae)9
- Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (additions to gastropods, scaphopods, pelecypods: Nuculidae to Malleidae)9
- The Geology of the Waitaki Subdivision8
- A contribution to the study of the Eocene in Western Pakistan and Western India: C. The description of the Scaphopoda and Gastropoda from standard sections in the Rakhi Nala and Zindar Pir areas of the Western Punjab and in the Kohat District8
- The Molluscan Fauna of the Alum Bluff Group of Florida5
- Unpublished notes on Caribbean collection of Jack and Winifred Gibson-Smith, Naturhistorisches Museum Basel2
- The Lower Triassic System in the Abrek Bay area, south Primorye, Russia2
Each of the 192 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. 42 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 Laevidentalium
- Source
- Wikidata/Commons
- Credit
- Sowerby, 1860
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Laevidentalium was found in Sketchfab.
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
- 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 itLaevidentaliidae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Cossmann 1888)