Trisidos

This media file is from Naturalis Biodiversity Center , donated in the context of a partnership program. Please menti… · CC0 · 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
- ArcinaePBDB
- Diet
- suspension feederPBDB, for Arcinae
- Life habit
- epifaunalPBDB, for Arcinae
- Motility
- stationary, attachedPBDB, for Arcinae
- Vision
- limitedPBDB, for Arcidae
- Environment
- lagoonal,coastal,inner shelf,outer shelf,oceanic,brackish,freshwaterPBDB, for Arcidae
Time the record covers
At least 24 million years on record.
The record covers at least 27.3 Mya to 2.58 Mya. No occurrence read is dated outside 33.9 Mya to 11.7 ka.
33 occurrences of Trisidos on record, most of them in the Miocene. The Paleobiology Database records this as a living group. 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
33 occurrences- Oligocene9%
- Miocene58%
- Pliocene14%
- Pleistocene20%
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
- Baghmara Formation5
- Toukoshan Formation · Miaoli Group4
- Togopi Formation3
- Quilon Limestone Formation3
- Chengapara Formation2
- Gaj Formation2
Loading coastlines…
The named rock units Trisidos has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Trisidos and its relatives
MioceneWhere Trisidos and its relatives were recorded in the Miocene.
Found in the same rock
274 taxa- Anadara8 sites
- Turritella8 sites
- Nassarius5 sites
- Natica5 sites
- Cardium4 sites
- Crassatella4 sites
- Dosinia4 sites
- Pecten4 sites
- Striarca4 sites
- Venericardia4 sites
- Amusium3 sites
- Architectonica3 sites
- Chlamys3 sites
- Conus3 sites
- Crassispira3 sites
- Diplodonta3 sites
- Glycymeris3 sites
- Gyrineum3 sites
- Lophiotoma3 sites
- Natica alapapilionis3 sites
- Nucula3 sites
- Oliva3 sites
- Olivella3 sites
- Paphia3 sites
The Paleobiology Database records 10 sites for Trisidos, 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
15 references- Miocene Molluscan biosratigraphy of the Garo Hills, Meghalaya, India4
- Skwarko, 19944
- Faunal analysis of the Upper Miaoli Group in the Tunghsiao area, Miaoli Province, Formosa, China4
- Description of Mollusca from the post-Eocene Tertiary formation of north-western India: Gastropoda (in part) and Lamellibranchiata4
- Preliminary notes on fossil records of East Malaysia and Brunei3
- On the ages of certain Upper Tertiary beds of Peninsula India and Ceylon3
- Neogene and Quaternary Mollusca from the Makran Coast, Pakistan2
- Fossil fauna from the Tertiary of Garo Hills, Assam2
- Molluscan biostratigraphy of the Tertiary sediments of Mizoram, India1
- Neogene palaeontology of the Surma Group, Mizoram, India. 1 - The Arcoida (Mollusca: Bivalvia)1
- Biostratigraphy of the Post Kopili Sediments of Garo Hills, Meghalaya1
- Neogene Mollusca from the Vogelkop (Bird's Head Peninsula), West Irian, New Guinea1
Each of the 33 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. 3 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 Trisidos
- Source
- Wikidata/Commons
- Credit
- This media file is from Naturalis Biodiversity Center , donated in the context of a partnership program. Please menti…
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Trisidos 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 itArcinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Ršding 1798)