Similoleptaena tarwanpensis

Not Similoleptaena tarwanpensis. This is Similoleptaena tarwanpensis Roomusoks, 2004, a relative — both are Strophomenidae.
Oraspõld, Asta · CC BY-NC 4.0 · 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
- LeptaenaPBDB
- Diet
- suspension feederPBDB, for Leptaena
- Life habit
- epifaunalPBDB, for Leptaena
- Motility
- stationaryPBDB, for Leptaena
- Vision
- blindPBDB, for Strophomenata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At most 1.3 million years on record.
Every occurrence read is dated to somewhere between 451.8 Mya and 450.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
6 occurrences of Similoleptaena tarwanpensis on record, most of them in the Ordovician. 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
6 occurrences- Ordovician100%
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
1 formation
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The named rock units Similoleptaena tarwanpensis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Similoleptaena tarwanpensis and its relatives
OrdovicianWhere Similoleptaena tarwanpensis and its relatives were recorded in the Ordovician.
Found in the same rock
8 taxa- Geniculina vironiensis2 sites
- Holtedahlina rakverensis2 sites
- Rakverina inaequiclina2 sites
- Geniculina voorensis1 site
- Platystrophia orbiculata1 site
- Pseudostrophomena reclinis1 site
- Toxochasmops (Toxochasmops) wesenbergensis1 site
- Trigrammaria estonica1 site
The Paleobiology Database records 6 sites for Similoleptaena tarwanpensis, and this reads all of them. The number is how many of those sites it was catalogued from too.
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
1 referenceEach of the 6 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Similoleptaena tarwanpensis Roomusoks, 2004
- Source
- GBIF
- Credit
- Oraspõld, Asta
- Licence
- CC BY-NC 4.0
- Commercial use
- the licence does not allow it
No 3D scan of Similoleptaena tarwanpensis 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 itLeptaena through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Roomusoks 2004