Inoperna
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
- MytilidaePBDB
- Diet
- suspension feederPBDB, for Mytilidae
- Life habit
- epifaunalPBDB, for Mytilidae
- Motility
- stationary, attachedPBDB, for Mytilidae
- Vision
- blindPBDB, for Bivalvia
- Environment
- lagoonal,coastal,inner shelf,outer shelf,oceanic,brackish,freshwaterPBDB, for Mytilidae
Time the record covers
At least 146 million years on record.
The record covers at least 205.7 Mya to 59.24 Mya. No occurrence read is dated outside 211.18 Mya to 56 Mya.
249 occurrences of Inoperna on record, most of them in the Early Jurassic. 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
249 occurrences- Late Triassic12%
- Early Jurassic26%
- Middle Jurassic25%
- Late Jurassic18%
- Early Cretaceousunder 1%
- Late Cretaceous17%
- Paleoceneunder 1%
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
60 formations
- Dhruma Formation · Shaqra Group23
- Chari Formation14
- Alcobaca Formation13
- Ladd Formation12
- Koessen Formation10
- Turmiel Fm Formation10
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The named rock units Inoperna has been recovered from, largest first. Drawn where the rock is now, not where it formed. 36 further formations hold fewer occurrences each and are not listed. 77 occurrences have no formation on record, which is common for older literature.
Inoperna and its relatives
Early JurassicWhere Inoperna and its relatives were recorded in the Early Jurassic.
Found in the same rock
2,037 taxa- Actinostreon gregarea44 sites
- Protocardia44 sites
- Parallelodon hirsonensis41 sites
- Entolium (Entolium) corneolum40 sites
- Arcomytilus39 sites
- Plagiostoma38 sites
- Grammatodon concinnus37 sites
- Ceratomya excentrica33 sites
- Gryphaea (Bilobissa) sublobata33 sites
- Pholadomya lirata33 sites
- Protocardia striatula33 sites
- Modiolus (Modiolus) imbricatus32 sites
- Pholadomya (Bucardiomya) protei29 sites
- Homomya gibbosa28 sites
- Pseudomelania27 sites
- Mactromya26 sites
- Nanogyra (Nanogyra) nana25 sites
- Pinna (Pinna) folium25 sites
- Thracia25 sites
- Camptonectes (Camptonectes) auritus24 sites
- Ceratomya concentrica24 sites
- Neocrassina24 sites
- Nucula (Palaeonucula) cuneiformis24 sites
- Chlamys23 sites
The Paleobiology Database records 203 sites for Inoperna, 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
65 references- Palökologie benthischer Faunen aus dem Unter-Toarc SW-Europas43
- Le Jurassique D`Arabie Centrale29
- Unpublished data from Kachchh18
- Stratigraphie und Biofacies der Koessener Formation (Obertrias, Nordliche Kalkalpen)17
- Unpublished data16
- Temperature-related body size change of marine benthic macroinvertebrates across the Early Toarcian Anoxic Event10
- Unpublished data on Cretaceous-Paleocene molluscan assemblages8
- Palökologische und biofazielle Analyse des Kimmeridge (Oberjura) von Consolacao, Mittelportugal [Paleoecological and biofacies analysis of the Kimmeridgian (Upper Jurassic) of Consolacao, central Portugal]7
- Die Muschelfauna der Nayband-Formation (Obertrias, Nor - Rhät) des östlichen Zentraliran6
- Zur Stratigraphie und Palaeontologie der Tendaguruschichten6
- Palökologie benthischer Faunengemeinschaften und Taxonomie der Bivalven im Jura von Südtunesien5
- Late Cretaceous paleoecology of the Holz Shale, Orange County, California5
Each of the 249 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. 53 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 Inoperna
- 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 itMytilidae through timeFormations of the Early JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1873)