Turrilitidae
Turrilitidae is a family of extinct heteromorph ammonite cephalopods. All members had shells that coiled helically that tended to resemble auger shells. The ecological roles turrilitids played is largely unknown, as experts are still speculating what niches they filled. Some are suspected of floating in the water column, while others, such as the eponymous Turrilites, are believed to have been bottom-dwellers. The name of the type genus Turrilites is a hybrid formation based on Latin turris "tower" and Greek lithos "stone", coined by Lamarck in 1801.

Momotarou2012 · CC BY-SA 3.0 · 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
- TurrilitoideaPBDB
- Diet
- carnivorePBDB, for Ammonoidea
- Life habit
- nektonicPBDB, for Ammonoidea
- Motility
- fast-movingPBDB, for Ammonoidea
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At least 37 million years on record.
The record covers at least 110.1 Mya to 72.2 Mya. No occurrence read is dated outside 121.4 Mya to 66 Mya.
581 occurrences of Turrilitidae on record, most of them in the Late Cretaceous. 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
581 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
78 formations
- Grès verts helvétiques Formation41
- Calcaires de Fiz Formation32
- Buda Limestone Formation17
- Aitamir Formation16
- Lower Chalk Formation14
- Beer Head Limestone Formation · Grey Chalk Group10
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The named rock units Turrilitidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 54 further formations hold fewer occurrences each and are not listed. 244 occurrences have no formation on record, which is common for older literature.
Turrilitidae and its relatives
Late CretaceousWhere Turrilitidae and its relatives were recorded in the Late Cretaceous.
Found in the same rock
1,148 taxa- Turrilites costatus51 sites
- Inoceramus40 sites
- Mariella33 sites
- Holaster31 sites
- Schloenbachia varians29 sites
- Acanthoceras rhotomagense26 sites
- Desmoceras (Desmoceras) latidorsatum25 sites
- Mantelliceras saxbii25 sites
- Mariella (Mariella) bergeri25 sites
- Hamites24 sites
- Turrilites24 sites
- Ostlingoceras puzosianum23 sites
- Anisoceras22 sites
- Mantelliceras mantelli22 sites
- Schloenbachia22 sites
- Puzosia (Puzosia) mayoriana20 sites
- Sciponoceras20 sites
- Gnesioceramus cripsii19 sites
- Turrilites acutus19 sites
- Scaphites18 sites
- Hemiaster17 sites
- Hypoturrilites gravesianus17 sites
- Mantelliceras cantianum17 sites
- Pseudhelicoceras16 sites
The Paleobiology Database records 361 sites for Turrilitidae, and this reads 240 of them. 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
89 references- Turrilitidy pozdnego Al'ba i Cenomana yuga SSSR126
- Les grès verts helvétiques (Aptien moyen-Albien supérieur) de Haute-Savoie, Valais et Vaud (Alpes occidentales franco-suisses)85
- A correlation of the uppermost Albian and the Cenomanian of South-West England41
- Die Oberkreide der Sack-Mulde bei Alfeld (Cenoman-Unter-Coniac) Lithologie, Biostratigraphie und Inoceramen19
- Lower and Middle Cenomanian ammonites from the Morondava Basin, Madagascar13
- Upper Albian and Lower Cenomanian ammonites from the Main Street Limestone, Grayson Marl and Del Rio Clay in northeast Texas13
- Lower Cenomanian Forbesiceras brundrettei zone ammonite fauna in Texas, USA12
- Faunes d’ammonites et biostratigraphie compareé du Cénomanien du nord-ouest de la France (Normandie) et du sud de l’Angleterre12
- Geologie de Madagascar I. Les Terrains Sedimentaires11
- Jura Vaudois et Neuchatelois11
- Lower Cenomanian and Late Albian (Cretaceous) ammonites, especially Lyelliceridae, or Texas and Mexico10
- Cenomanian Turrilitidae (Cretaceous heteromorph ammonites) from the Koppeh Dagh, northeast Iran: Taxonomy and stratigraphic implications9
Each of the 581 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. 77 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 Turrilitidae
- Source
- Wikipedia/Commons
- Credit
- Momotarou2012
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Turrilitidae 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 itTurrilitoidea through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Gill 1871