Rhaetavicula contorta

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
- RhaetaviculaPBDB
- Diet
- suspension feederPBDB, for Pteriidae
- Life habit
- epifaunalPBDB, for Pteriidae
- Motility
- stationary, attached, epibiontPBDB, for Pteriidae
- Vision
- blindPBDB, for Bivalvia
- Environment
- coastal,inner shelf,outer shelf,oceanicPBDB, for Pteriidae
Time the record covers
At most 36 million years on record.
Every occurrence read is dated to somewhere between 237 Mya and 201.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
112 occurrences of Rhaetavicula contorta on record, most of them in the Late Triassic. 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
112 occurrences- Late Triassic100%
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
15 formations
- Kossen Formation40
- Koessen Formation25
- Westbury Formation · Penarth Group16
- Calcare di Zu Formation3
- Riva di Solto Formation1
- Zu Limestone Formation1
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The named rock units Rhaetavicula contorta has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.
Rhaetavicula contorta and its relatives
Late TriassicWhere Rhaetavicula contorta and its relatives were recorded in the Late Triassic.
Found in the same rock
387 taxa- Protocardia rhaetica26 sites
- Pseudoplacunopsis alpina24 sites
- Myophoriopis18 sites
- Modiolus17 sites
- Atreta intusstriata15 sites
- Chlamys15 sites
- Gervillia inflata15 sites
- Praechlamys valoniensis14 sites
- Gervillaria13 sites
- Liostrea13 sites
- Palaeocardita austriaca13 sites
- Isocyprina12 sites
- Isocyprina ewaldi12 sites
- Cassianella11 sites
- Nuculana11 sites
- Bakevellia (Bakevelloides) praecursor10 sites
- Cardinia10 sites
- Rhaetina gregaria8 sites
- Ostrea (Alectryonia)7 sites
- Gyrolepis albertii6 sites
- Isocyprina (Eotrapezium)6 sites
- Myophoria inflata6 sites
- Mytilus minutus6 sites
- Pholadomya munita6 sites
The Paleobiology Database records 80 sites for Rhaetavicula contorta, 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
22 references- Stratigraphie und Biofacies der Koessener Formation (Obertrias, Nordliche Kalkalpen)40
- Brachiopod and bivalve ecology in the Late Triassic (Alps, Austria): onshore-offshore replacements caused by variations in sediment and nutrient supply15
- Linking taphonomy to community-level abundance: insights into compositional fidelity of the Upper Triassic shell concentrations (Eastern Alps)10
- Palaeoecology of the Late Triassic extinction event in the SW UK9
- Etude géologique et paléontologique des environs de St-Ambroix (Gard). Première partie (Houiller, Trias, Infralias)7
- Géologie et paléontologie des couches à Avicula contorta en Lombardie7
- Macfadyen, 19703
- Biostratigraphic correlation, paleoenvironment stress, and subrosion pipe collapse: Dutch Rhaetian shales uncover their secrets2
- The Triassic of Indochina Peninsula and its interregional correlation2
- End-triassic bivalve extinction: Lombardian alps, Italy2
- Late Triassic and early Jurassic biostratigraphy of the Felixkirk Borehole, North Yorkshire2
- The Norian-Rhaetian boundary in the light of micropaleontological data2
Each of the 112 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. 10 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 Rhaetavicula contorta
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Rhaetavicula contorta 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itRhaetavicula through timeFormations of the Late TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Portlock 1843)