Gryphaeostrea

Young, Keith · CC0 · via GBIF. 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
- GryphaeostreinaePBDB
- Diet
- suspension feederPBDB, for Gryphaeidae
- Life habit
- epifaunalPBDB, for Gryphaeidae
- Motility
- stationary, attachedPBDB, for Gryphaeidae
- Vision
- blindPBDB, for Bivalvia
- Environment
- marine,brackishPBDB, for Ostreida
Time the record covers
At least 112 million years on record.
The record covers at least 132.6 Mya to 20.45 Mya. No occurrence read is dated outside 137.05 Mya to 15.98 Mya.
304 occurrences of Gryphaeostrea 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
304 occurrences- Early Cretaceous5%
- Late Cretaceous76%
- Paleocene9%
- Eocene8%
- Oligoceneunder 1%
- Miocene2%
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
67 formations
- Prairie Bluff Formation · Selma Group53
- Corsicana Marl Formation32
- Mancos Shale Formation13
- Chiwapa Formation9
- Marshalltown Formation7
- Owl Creek Formation7
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The named rock units Gryphaeostrea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 43 further formations hold fewer occurrences each and are not listed. 64 occurrences have no formation on record, which is common for older literature.
Gryphaeostrea and its relatives
Late CretaceousWhere Gryphaeostrea and its relatives were recorded in the Late Cretaceous.
Found in the same rock
1,910 taxa- Exogyra (Exogyra) costata109 sites
- Anomia argentaria88 sites
- Crassatella vadosa85 sites
- Veniella conradi81 sites
- Cliona80 sites
- Serpula80 sites
- Pycnodonte vesicularis79 sites
- Idonearca capax76 sites
- Turritella75 sites
- Crenella serica70 sites
- Pycnodonte61 sites
- Cubitostrea tecticosta58 sites
- Cyprimeria57 sites
- Camptonectes bubonis56 sites
- Turritella vertebroides56 sites
- Nuculana55 sites
- Vertebrata53 sites
- Pterotrigonia (Scabrotrigonia)50 sites
- Granocardium49 sites
- Nucula percrassa49 sites
- Syncyclonema49 sites
- Bryozoa48 sites
- Cymbophora48 sites
- Spondylus46 sites
The Paleobiology Database records 266 sites for Gryphaeostrea, 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
67 references- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain52
- Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain39
- Unpublished data on Cretaceous-Paleocene molluscan assemblages35
- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf14
- Paleontology of the Greenhorn cylcothem (Cretaceous: late Cenomanian to middle Turonian) at Black Mesa, northeastern Arizona13
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda13
- Cretaceous deposits of the eastern gulf region and species of Exogyra from the eastern gulf region and the Carolinas12
- The paleoecology of the Cenomanian-Turonian (Cretaceous) stage boundary extinctions at Black Mesa, Arizona10
- Fabric of the Cretaceous-Tertiary Marine Macrofaunal Transition at Braggs, Alabama9
- Stratigraphy of the outcropping post-Magothy Upper Cretaceous formations in Southern New Jersey an Northern Delmarva peninsula, Delaware and Maryland8
- Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region7
- The stratigraphical palaeontology of the Lower Greensand6
Each of the 304 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. 55 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 Gryphaeostrea
- Source
- GBIF
- Credit
- Young, Keith
- 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 itGryphaeostreinae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1865)