Exogyra

Exogyra is an extinct genus of marine oysters that belongs to the family Gryphaeidae. These bivalves were cemented by the more cupped left valve. The right valve is flatter, and the beak is curved to one side. Exogyra lived on solid substrates in warm seas during the Jurassic and Cretaceous periods.

Exogyra

Wilson44691 · Public Domain · 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
ExogyrinaePBDB
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 187 million years on record.

The record covers at least 199.5 Mya to 11.63 Mya. No occurrence read is dated outside 201.4 Mya to 7.246 Mya.

Late Triassic — about 0 of 1049 occurrencesEarly Jurassic — about 10 of 1049 occurrencesEarly JurassicMiddle Jurassic — about 9 of 1049 occurrencesLate Jurassic — about 43 of 1049 occurrencesLate JurassicEarly Cretaceous — about 239 of 1049 occurrencesEarly CretaceousLate Cretaceous — about 723 of 1049 occurrencesLate CretaceousPaleocene — about 9 of 1049 occurrencesEocene — about 12 of 1049 occurrencesEoceneOligocene — about 0 of 1049 occurrencesMiocene — about 4 of 1049 occurrencesMiocenePliocene — about 0 of 1049 occurrences205–199 Mya — about 3 occurrences199–192 Mya — about 4 occurrences192–185 Mya — about 3 occurrences185–178 Mya — about 0.5 occurrences178–172 Mya — about 0.1 occurrences172–165 Mya — about 3 occurrences165–158 Mya — about 11 occurrences158–151 Mya — about 24 occurrences151–145 Mya — about 12 occurrences145–138 Mya — about 15 occurrences138–131 Mya — about 70 occurrences131–125 Mya — about 30 occurrences125–118 Mya — about 33 occurrences118–111 Mya — about 42 occurrences111–104 Mya — about 27 occurrences104–98 Mya — about 78 occurrences98–91 Mya — about 79 occurrences91–84 Mya — about 20 occurrences84–77 Mya — about 65 occurrences77–71 Mya — about 163 occurrences71–64 Mya — about 345 occurrences64–57 Mya — about 7 occurrences57–50 Mya — about 3 occurrences50–44 Mya — about 2 occurrences44–37 Mya — about 2 occurrences37–30 Mya — about 5 occurrences24–17 Mya — about 2 occurrences17–10 Mya — about 0.9 occurrences10–3.4 Mya — about 1 occurrence199.5 Mya11.63 Mya205 Mya3 Mya

1,049 occurrences of Exogyra 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

1,049 occurrences

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

160 formations

Prairie Bluff — 34.50°N, 88.94°WPrairie Bluff — 34.25°N, 88.97°WPrairie Bluff — 34.22°N, 89.00°WPrairie Bluff — 33.93°N, 88.98°WPrairie Bluff — 33.79°N, 88.97°WPrairie Bluff — 33.79°N, 88.91°WPrairie Bluff — 33.72°N, 88.92°WPrairie Bluff — 33.61°N, 88.90°WPrairie Bluff — 33.52°N, 88.84°WPrairie Bluff — 33.38°N, 88.74°WPrairie Bluff — 33.05°N, 88.56°WPrairie Bluff — 32.90°N, 88.46°WPrairie Bluff — 34.48°N, 88.98°WPrairie Bluff — 32.73°N, 88.30°WPrairie Bluff — 32.74°N, 88.36°WPrairie Bluff — 32.70°N, 88.17°WPrairie Bluff — 32.63°N, 88.22°WPrairie Bluff — 32.57°N, 88.14°WPrairie Bluff — 32.49°N, 88.10°WPrairie Bluff — 32.43°N, 88.04°WPrairie Bluff — 32.39°N, 87.92°WPrairie Bluff — 32.31°N, 87.80°WPrairie Bluff — 32.23°N, 87.50°WPrairie Bluff — 32.14°N, 87.42°WPrairie Bluff — 32.07°N, 87.33°WPrairie Bluff — 32.04°N, 87.26°WPrairie Bluff — 32.08°N, 87.03°WPrairie Bluff — 32.05°N, 86.99°WPrairie Bluff — 32.05°N, 86.81°WPrairie Bluff — 32.05°N, 86.81°WPrairie Bluff — 31.97°N, 86.72°WPrairie Bluff — 32.00°N, 86.48°WPrairie Bluff — 31.98°N, 86.00°WPrairie Bluff — 31.92°N, 86.17°WPrairie Bluff — 31.98°N, 85.92°WCorsicana Marl — 33.53°N, 94.51°WCorsicana Marl — 33.51°N, 94.67°WCorsicana Marl — 33.34°N, 95.40°WCorsicana Marl — 33.10°N, 95.99°WCorsicana Marl — 32.92°N, 96.12°WCorsicana Marl — 32.85°N, 96.21°WCorsicana Marl — 32.88°N, 96.20°WCorsicana Marl — 32.76°N, 96.28°WCorsicana Marl — 32.59°N, 96.32°WCorsicana Marl — 32.53°N, 96.32°WCorsicana Marl — 32.17°N, 96.33°WCorsicana Marl — 31.81°N, 96.54°WCorsicana Marl — 31.76°N, 96.57°WCorsicana Marl — 30.94°N, 96.95°WCorsicana Marl — 30.85°N, 97.08°WCorsicana Marl — 30.69°N, 97.20°WCorsicana Marl — 30.38°N, 97.49°WCorsicana Marl — 30.37°N, 97.45°WCorsicana Marl — 30.33°N, 97.45°WCorsicana Marl — 30.20°N, 97.62°WCorsicana Marl — 30.15°N, 97.67°WCorsicana Marl — 30.00°N, 97.68°WCorsicana Marl — 29.83°N, 97.84°WCorsicana Marl — 29.80°N, 97.89°WCorsicana Marl — 29.72°N, 97.90°WCorsicana Marl — 29.60°N, 98.03°WCorsicana Marl — 29.63°N, 98.54°WCorsicana Marl — 29.59°N, 98.08°WCorsicana Marl — 29.55°N, 98.13°WCorsicana Marl — 29.48°N, 98.23°WCorsicana Marl — 29.42°N, 98.43°WCorsicana Marl — 29.44°N, 98.56°WCorsicana Marl — 29.65°N, 98.38°WCorsicana Marl — 29.39°N, 98.71°WCorsicana Marl — 29.37°N, 98.78°WCorsicana Marl — 29.48°N, 98.81°WCorsicana Marl — 29.41°N, 98.90°WCorsicana Marl — 29.35°N, 98.88°WCorsicana Marl — 29.18°N, 99.02°WCorsicana Marl — 29.42°N, 98.49°WCorsicana Marl — 30.27°N, 97.74°WNeylandville Marl — 33.37°N, 95.69°WNeylandville Marl — 32.59°N, 96.31°WNeylandville Marl — 33.14°N, 96.11°WNeylandville Marl — 33.20°N, 96.61°WNeylandville Marl — 31.31°N, 96.90°WNeylandville Marl — 32.10°N, 96.47°WNeylandville Marl — 30.85°N, 96.98°WNeylandville Marl — 31.48°N, 96.73°WWoodbine — 32.77°N, 97.01°WWoodbine — 32.86°N, 97.06°WWoodbine — 32.99°N, 96.95°WWoodbine — 33.66°N, 96.45°WWoodbine — 32.55°N, 97.24°WWoodbine — 32.70°N, 97.45°WWoodbine — 33.70°N, 96.82°WWoodbine — 33.66°N, 96.91°WWoodbine — 33.81°N, 96.83°WWoodbine — 33.62°N, 96.61°WWoodbine — 33.76°N, 96.54°WWoodbine — 33.70°N, 96.58°WWoodbine — 33.71°N, 96.46°WWoodbine — 33.87°N, 95.57°WPeedee — 34.04°N, 79.80°WPeedee — 33.91°N, 79.45°WPeedee — 33.83°N, 79.25°WPeedee — 34.27°N, 77.95°WPeedee — 35.77°N, 78.64°WPeedee — 34.40°N, 78.27°WPeedee — 34.48°N, 78.41°WProvidence — 31.91°N, 86.17°WProvidence — 31.92°N, 85.82°WProvidence — 31.89°N, 85.70°WProvidence — 31.95°N, 85.68°WProvidence — 31.92°N, 85.35°WProvidence — 31.94°N, 86.11°WProvidence — 31.84°N, 85.22°WProvidence — 31.78°N, 85.14°WProvidence — 31.73°N, 85.11°WProvidence — 31.96°N, 85.45°WMarshalltown — 39.78°N, 75.44°WMarshalltown — 39.55°N, 75.65°WMarshalltown — 39.54°N, 75.72°WMarshalltown — 39.81°N, 75.16°WCoffee Sand — 34.43°N, 88.55°WCoffee Sand — 34.56°N, 88.45°WCoffee Sand — 34.66°N, 88.57°WCoffee Sand — 34.26°N, 88.70°WCoffee Sand — 34.61°N, 88.60°WCoffee Sand — 34.93°N, 88.52°WChiwapa — 34.63°N, 88.85°WChiwapa — 34.60°N, 88.95°WChiwapa — 34.46°N, 88.90°WChiwapa — 34.38°N, 88.98°WChiwapa — 34.36°N, 88.93°WChiwapa — 34.21°N, 88.98°WChiwapa — 34.04°N, 88.93°WChiwapa — 34.25°N, 88.96°WMancos Shale — 36.35°N, 109.82°WMancos Shale — 35.73°N, 110.82°WTropic Shale — 37.07°N, 111.62°WTropic Shale — 37.21°N, 111.17°WOwl Creek — 34.17°N, 88.89°WOwl Creek — 34.82°N, 88.88°WOwl Creek — 34.74°N, 88.90°WOwl Creek — 34.88°N, 88.87°WOwl Creek — 34.63°N, 88.84°WOwl Creek — 34.50°N, 89.00°WOwl Creek — 34.44°N, 88.95°WOwl Creek — 34.23°N, 89.00°WOwl Creek — 37.00°N, 89.85°WRipley — 31.79°N, 85.13°WRipley — 33.89°N, 89.02°WRipley — 34.25°N, 90.00°WRipley — 34.49°N, 89.01°WRipley — 32.05°N, 86.78°WRipley — 35.32°N, 88.42°WRipley — 35.29°N, 88.60°WRipley — 32.64°N, 88.17°WRipley — 32.15°N, 87.39°WKazhdumi — 29.97°N, 52.90°EColeraine — 47.32°N, 93.28°WColeraine — 47.00°N, 93.00°WColeraine — 47.29°N, 93.43°WSevern — 38.80°N, 77.00°WSevern — 38.89°N, 76.85°WSevern — 38.92°N, 76.85°WEutaw — 32.46°N, 84.99°WEutaw — 32.35°N, 85.36°WEutaw — 32.29°N, 85.85°WEutaw — 32.32°N, 85.00°WEutaw — 33.08°N, 88.24°WEutaw — 32.71°N, 87.79°WEutaw — 32.77°N, 87.87°WDakhla — 25.50°N, 29.42°EDakhla — 25.50°N, 30.00°EDakhla — 25.50°N, 30.50°EDakhla — 25.00°N, 30.75°EDakhla — 25.50°N, 29.17°EAnacacho Limestone — 29.37°N, 99.28°WAnacacho Limestone — 29.35°N, 99.14°WAnacacho Limestone — 29.44°N, 98.86°WAnacacho Limestone — 29.18°N, 100.03°WAnacacho Limestone — 29.18°N, 100.20°WAnacacho Limestone — 29.19°N, 100.30°WEscondido — 29.59°N, 98.07°WEscondido — 29.36°N, 99.06°WEscondido — 29.16°N, 99.47°WEscondido — 29.18°N, 99.79°WEscondido — 29.10°N, 99.88°WEscondido — 29.09°N, 98.87°WEscondido — 29.08°N, 100.00°WEscondido — 28.71°N, 100.50°WAgrio — 38.98°S, 68.00°WAgrio — 38.15°S, 70.10°WAgrio — 37.42°S, 70.33°WAgrio — 37.27°S, 70.48°WFolkestone — 51.08°N, 1.18°EFolkestone — 51.08°N, 1.08°EFolkestone — 51.28°N, 0.53°EFolkestone — 51.32°N, 0.32°EFolkestone — 51.22°N, 0.82°WBlack Creek — 35.77°N, 78.64°WBlack Creek — 34.58°N, 78.27°WBlack Creek — 35.23°N, 77.79°WBlack Creek — 35.22°N, 77.68°WBlack Creek — 35.46°N, 77.68°WBlack Creek — 35.67°N, 77.47°WMarnes de Latrecey — 47.98°N, 4.85°E

Loading coastlines…

The named rock units Exogyra has been recovered from, largest first. Drawn where the rock is now, not where it formed. 136 further formations hold fewer occurrences each and are not listed. 211 occurrences have no formation on record, which is common for older literature.

Exogyra and its relatives

Late Cretaceous

Where Exogyra and its relatives were recorded in the Late Cretaceous.

Found in the same rock

1,242 taxa

The Paleobiology Database records 872 sites for Exogyra, 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

203 references

Each of the 1,049 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. 191 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 content3

Picture of Exogyra

Credit
Wilson44691
Licence
Public Domain
Commercial use
the licence allows it

Laser scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Exogyra sp. · YPM:IP:YPM IP 855372

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

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 itExogyrinae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Say 1820)