Tetractinella trigonella

BerndH · CC BY-SA 3.0 · via Wikidata/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
- TetractinellaPBDB
- Diet
- suspension feederPBDB, for Athyrididina
- Life habit
- low-level epifaunalPBDB, for Athyrididina
- Motility
- stationaryPBDB, for Athyrididina
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 2.9 million years on record.
The record covers at least 244.4 Mya to 241.464 Mya. No occurrence read is dated outside 247 Mya to 237 Mya.
71 occurrences of Tetractinella trigonella on record, most of them in the Middle 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
71 occurrences- Middle 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
13 formations
- Felsõörs Formation13
- Esino Formation3
- Karchowice Formation3
- Zuhánya Limestone Formation2
- Vászoly Formation2
- Muschelkalk Formation2
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The named rock units Tetractinella trigonella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 39 occurrences have no formation on record, which is common for older literature.
Tetractinella trigonella and its relatives
Middle TriassicWhere Tetractinella trigonella and its relatives were recorded in the Middle Triassic.
Found in the same rock
334 taxa- Decurtella decurtata30 sites
- Mentzelia mentzeli29 sites
- Coenothyris vulgaris28 sites
- Punctospirella fragilis26 sites
- Koeveskallina koeveskalyensis22 sites
- Angustothyris angustaeformis18 sites
- Costirhynchopsis mentzeli15 sites
- Volirhynchia vivida13 sites
- Volirhynchia tommasi12 sites
- Nudirostralina trinodosi11 sites
- Silesiathyris angusta11 sites
- Coenothyris kraffti9 sites
- Dinarispira avarica8 sites
- Schwagerispira schwageri8 sites
- Sinucosta pectinata8 sites
- Sulcatinella incrassata8 sites
- Balatonites6 sites
- Koeveskallina paleotypus6 sites
- Schwagerispira mojsisovicsi6 sites
- Caucasorhynchia altaplecta5 sites
- Dinarispira dinarica5 sites
- Monophyllites wengensis5 sites
- Plagiostoma striatum5 sites
- Rhynchonella illyrica5 sites
The Paleobiology Database records 69 sites for Tetractinella trigonella, 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
25 references- Brachiopoden der alpinen Trias21
- The Pelsonian brachiopod fauna of the Balaton Highland11
- Brachiopoden und Lamellibranchiaten aus der Trias von Bosnien, Dalmatien, und Venetien [Brachiopods and bivalves of the Triassic of Bosnia, Dalmatia and Veneto]5
- Middle Triassic (Anisian) Brachiopods From the Yugoslavian Carpatho-Balkanides4
- Brachiopod-bivalve assemblages of the middle Triassic Terebratula Beds, Upper Siesia, Poland3
- Middle Triassic Brachiopods from Val Palina, Bergamasc Alps, Italy3
- Brachiopoden aus der Trias des Bakonyer Waldes [Brachiopods from the Triassic of the Bakony Forest]3
- Geologie der Umgebung von Sarajevo3
- Ramienionogi warstw terebratulowych (środkowy trias) zachodniej części Górnego Śląska [The brachiopods from the Terebratula beds (Middle Triassic) in the western part of Upper Silesia]2
- The genus Tetractinella Bittner 1890: morphology, ultrastructure, and 3D reconstruction1
- Crinoids from the Muschelkalk of the Mecsek Mountains and their stratigraphical significance1
- Bivalve assemblages from the Middle Triassic Muschelkalk of the Mecsek Mts, South Hungary: An overview1
Each of the 71 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. 13 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 Tetractinella trigonella
- Source
- Wikidata/Commons
- Credit
- BerndH
- Licence
- CC BY-SA 3.0
- 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 itTetractinella through timeFormations of the Middle TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Schlotheim 1820)