Titanosarcolites
Titanosarcolites is a genus of giant rudist bivalve from the Cretaceous. Its fossils have been found in Jamaica, Southeastern Mexico and the Southern US. It belonged to the now extinct family known as Caprinidae, a group that went extinct during the KT extinction event, 66 MYA. Titanosarcolites was one of the last members of this group. There were several species, including T. alatus, T. giganteus, T. macgillavryi, and T. oddsensis.

Jonathan Chen · CC BY-SA 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
- AntillocaprinidaePBDB
- Diet
- suspension feederPBDB, for Hippuritida
- Life habit
- epifaunalPBDB, for Antillocaprinidae
- Motility
- stationary, attachedPBDB, for Hippuritida
- Vision
- blindPBDB, for Bivalvia
- Environment
- marinePBDB, for Antillocaprinidae
Time the record covers
At most 18 million years on record.
Every occurrence read is dated to somewhere between 83.6 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
62 occurrences of Titanosarcolites 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
62 occurrences- Late Cretaceous100%
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
12 formations
- Guinea Corn Formation33
- Angostura Formation3
- Corsicana Marl Formation2
- Nacatoch Sand Formation2
- Ocozocoautla Formation2
- Prairie Bluff Formation1
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The named rock units Titanosarcolites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 occurrences have no formation on record, which is common for older literature.
Titanosarcolites and its relatives
Late CretaceousWhere Titanosarcolites and its relatives were recorded in the Late Cretaceous.
Found in the same rock
296 taxa- Exogyra (Exogyra) costata7 sites
- Granocardium7 sites
- Inoceramus7 sites
- Legumen ellipticum7 sites
- Syncyclonema7 sites
- Crenella serica6 sites
- Cyclorisma6 sites
- Nuculana6 sites
- Caestocorbula crassiplica5 sites
- Crassatella vadosa5 sites
- Cymbophora5 sites
- Cyprimeria5 sites
- Liopistha protexta5 sites
- Nucula percrassa5 sites
- Praebarrettia5 sites
- Striarca5 sites
- Veniella5 sites
- Veniella conradi5 sites
- Vetericardiella5 sites
- Ambigostrea4 sites
- Anomia4 sites
- Anomia argentaria4 sites
- Antillocaprina4 sites
- Barrettia4 sites
The Paleobiology Database records 19 sites for Titanosarcolites, and this reads all 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
18 references- Stratigraphy of the Guinea Corn Formation (Upper Cretaceous) at its type locality in the Rio Minho between Grantham and Guinea Corn, northern Clarendon, Jamaica20
- Unpublished data on Cretaceous-Paleocene molluscan assemblages9
- Late Maastrichtian rudist and coral assemblages from the Central Inlier, Jamaica: towards an event stratigraphy for shallow-water Caribbean limestones5
- Palaeoecology of corals and rudists in mixed volcaniclastic carbonate small-scale rhythms (Upper Cretaceous, Jamaica)5
- Two very fossiliferous rudist sites from the Marchmont Inlier, northwestern Jamaica4
- Paleoecology of the Maastrichtian rudist Biradiolites in Jamaica2
- Rudists of Mexico: Historical Aspects and Selected Areas of Research2
- Rudistas del Cretácico superior del Centro al Sureste de México (Recuento sistemático de rudistas americanos)2
- First record of the rudist bivalve Mitrocaprina tschoppi (Palmer) from the Maastrichtian of Jamaica2
- Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain2
- The larger invertebrate fossils of the Navarro group of Texas2
- Palaeobiology of a Biradiolites mooretownensis rudist lithosome: seasonality, reproductive cyclicity and population dynamics1
Each of the 62 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. 6 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 Titanosarcolites
- Source
- Wikipedia/Commons
- Credit
- Jonathan Chen
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Titanosarcolites 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 itAntillocaprinidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Trechmann 1924