Steinmanella

via GBIF · 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
- SteinmanellinaePBDB
- Diet
- suspension feederPBDB, for Trigoniida
- Life habit
- infaunalPBDB, for Trigoniida
- Motility
- facultatively mobilePBDB, for Trigoniida
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 59 million years on record.
The record covers at least 143.1 Mya to 83.6 Mya. No occurrence read is dated outside 201.4 Mya to 66 Mya.
81 occurrences of Steinmanella on record, most of them in the Early 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
81 occurrences- Early Jurassicunder 1%
- Middle Jurassicunder 1%
- Late Jurassic8%
- Early Cretaceous75%
- Late Cretaceous16%
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
19 formations
- Agrio Formation · Mendoza Group32
- Mikasa Sandstone Formation · Middle Yezo Group8
- Rio Tascadero Formation6
- Bajada del Agria Formation5
- Picún Leufú Formation · Mendoza Group4
- Bandurrias Formation4
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The named rock units Steinmanella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.
Steinmanella and its relatives
Early CretaceousWhere Steinmanella and its relatives were recorded in the Early Cretaceous.
Found in the same rock
210 taxa- Cucullaea12 sites
- Trigonia carinata12 sites
- Eriphyla argentina9 sites
- Panopea9 sites
- Ostreidae8 sites
- Pholadomya gigantea8 sites
- Pterotrigonia8 sites
- Anditrigonia7 sites
- Ptychomya7 sites
- Chlamys6 sites
- Gervillaria6 sites
- Aphrodina5 sites
- Eriphyla5 sites
- Exogyra5 sites
- Isocardia5 sites
- Leanzatrigonia coihuicoensis5 sites
- Lucina5 sites
- Tanzanitrigonia agrioensis5 sites
- Ammonoidea4 sites
- Apiotrigonia (Apiotrigonia)4 sites
- Ceratostreon4 sites
- Entolium4 sites
- Gervillia4 sites
- Holcoptychites agrioensis4 sites
The Paleobiology Database records 70 sites for Steinmanella, 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
26 references- Lower Cretaceous ammonites from the Neuquen Basin, Argentina: Viluceras, a new Valanginian subgenus of Olcostephanus14
- The genus Steinmanella (Bivalvia, Trigonioida) in the lower member of the Agrio Formation (Lower Cretaceous), Neuquen Basin, Argentina.11
- A systematic survey of the Mesozoic Bivalvia from Japan11
- Miscellaneous PBDB housekeeping opinions, mostly to link duplicate genera or correct misspellings in Sepkoski's Genus Compendium (2002)5
- Taxonomy, facies relationships and palaeobiology of bakevelliid bivalves from the Lower Cretaceous of west-central Argentina5
- Carta Copiapó, Región de Atacama, Servicio Nacional de Geología y Minería, Carta Geológica de Chile, Serie Geología Básica, No. 91, 53 p, 1 mapa escala 1:100.0004
- Jurassic and Cretaceous trigoniid bivalves from west-central Argentina3
- The Urgonian facies of Central Asia3
- Geología del Área de Estación Chañar-Junta de Chingoles. Regiones de Atacama y Coquimbo. Carta Geología de Chile. Serie Geología Básica. No 1502
- Paleoenvironmental framework of dinosaur tracksites and other ichnofossils in Early Cretaceous mixed siliciclastic-carbonate deposits in the Neuquén Basin, northern Patagonia (Argentina)2
- Moscoso, R.; Mpodozis, C.; Nasi, C.; Ribba, L.; Arévalo, C. (compilador) 2010. Geología de la Hoja El Tránsito, Región de Atacama. Servicio Nacional de Geología y Minería, Carta Geológica de Chile, Serie Preliminar 7: 3 anexos, 1 mapa escala 1:250.000. Santiago2
- Geología del Área Monte Patria-El Maqui, Región de Coquimbo2
Each of the 81 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. 14 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 Steinmanella
- Source
- GBIF
- Credit
- via GBIF
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Steinmanella was found in MorphoSource and Sketchfab.
Smithsonian Open Access was 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 itSteinmanellinae through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Crickmay 1930