Choristothyris

via iDigBio · CC0 · via iDigBio. 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
- GemmarculinaePBDB
- Diet
- suspension feederPBDB, for Terebrataliidae
- Life habit
- low-level epifaunalPBDB, for Terebrataliidae
- Motility
- stationary, attachedPBDB, for Terebrataliidae
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
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.
6 occurrences of Choristothyris 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
6 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
3 formations
- Navesink Formation · Monmouth Group4
- Mount Laurel Formation · Monmouth Group1
- New Egypt Formation · Monmouth Group1
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The named rock units Choristothyris has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Choristothyris and its relatives
Late CretaceousWhere Choristothyris and its relatives were recorded in the Late Cretaceous.
Found in the same rock
93 taxa- Exogyra (Exogyra) costata5 sites
- Belemnitella americana4 sites
- Agerostrea3 sites
- Agerostrea mesenterica3 sites
- Baculites ovatus3 sites
- Cliona3 sites
- Dhondtichlamys venusta3 sites
- Ischyrhiza mira3 sites
- Spondylus3 sites
- Squalicorax pristodontus3 sites
- Anchura pennata2 sites
- Anomoeodus phaseolus2 sites
- Bryozoa2 sites
- Crassatella vadosa2 sites
- Cucullaea2 sites
- Cucullaea vulgaris2 sites
- Enchodus ferox2 sites
- Euspira halli2 sites
- Gryphaeostrea vomer2 sites
- Halisaurus platyspondylus2 sites
- Mosasauridae2 sites
- Mosasaurus2 sites
- Peritresius ornatus2 sites
- Plicatula2 sites
The Paleobiology Database records 5 sites for Choristothyris, 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
5 references- Paleoecology of the Delaware Valley region. Part II: Cretaceous to Quartenary2
- Faunal changes across the Cretaceous-Tertiary (K-T) boundary in the Atlantic coastal plain of New Jersey: restructuring the marine community after the K-T mass-extinction event1
- Paleontology, biostratigraphy, and depositional environments of the Cretaceous-Tertiary transition in the New Jersey coastal plain1
- Evidence of giant protostegid sea-turtles in the Cretaceous of New Jersey1
- Cretaceous fossils from New Jersey and Delaware1
Each of the 6 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. 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 Choristothyris
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itGemmarculinae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.