Trochammina

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
- TrochammininaePBDB
- Diet
- omnivorePBDB, for Trochamminidae
- Life habit
- epifaunalPBDB, for Trochamminidae
- Motility
- stationaryPBDB, for Trochamminoidea
Time the record covers
At least 298 million years on record.
The record covers at least 298.9 Mya to 11.7 ka. No occurrence read is dated outside 303.7 Mya to 0 Mya.
416 occurrences of Trochammina on record, most of them in the Early Cretaceous. 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
416 occurrences- Carboniferousunder 1%
- Permian9%
- Early Triassic2%
- Middle Triassic12%
- Late Triassic8%
- Early Jurassic6%
- Middle Jurassic9%
- Late Jurassic3%
- Early Cretaceous22%
- Late Cretaceous14%
- Paleocene2%
- Eocene6%
- Oligocene2%
- Miocene2%
- Pliocene1%
- Pleistocene2%
- Holoceneunder 1%
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
61 formations
- Sundays River Formation45
- Callytharra Formation26
- Kalol Formation16
- Paksa Formation14
- Castillo Pedroso Formation14
- Djangura Formation14
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The named rock units Trochammina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 37 further formations hold fewer occurrences each and are not listed. 164 occurrences have no formation on record, which is common for older literature.
Trochammina and its relatives
Early CretaceousWhere Trochammina and its relatives were recorded in the Early Cretaceous.
Found in the same rock
1,471 taxa- Ammobaculites108 sites
- Haplophragmoides79 sites
- Lenticulina59 sites
- Ammodiscus55 sites
- Nodosaria52 sites
- Cristellaria (Marginulina)41 sites
- Eoguttulina40 sites
- Astacolus39 sites
- Dentalina36 sites
- Textularia36 sites
- Gaudryina35 sites
- Spiroplectammina35 sites
- Lingulina34 sites
- Reophax33 sites
- Glomospirella32 sites
- Glomospira30 sites
- Vaginulina28 sites
- Etherilosia etheridgei26 sites
- Sansabaina26 sites
- Frondicularia25 sites
- Reinholdella25 sites
- Calcitornella23 sites
- Neochonetes (Sommeriella) pratti23 sites
- Dorothia21 sites
The Paleobiology Database records 305 sites for Trochammina, and this reads 240 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
98 references- The Foraminifera of the Late Valangian to Hautverian (Early Cretaceous) Sundays River Formation of the Algoa Basin, Eastern Cape Province, South Africa45
- Early and Middle Triassic trends in diversity, evenness, and size of foraminifers on a carbonate platform in south China: Implications for tempo and mode of biotic recovery from the end-Permian mass extinction36
- Foraminifera and their habitats within a cool-water carbonate succession following glaciation, Early Permian (Sakmarian), Western Australia26
- Sedimentology, micropaleontology, geochemistry and hydrocarbon potential of shale from the cretaceous Lower Colorado Group in Western Canada26
- Benthic foraminifers and palaeoenvironment in the Lower and Middle Jurassic of the Western Basque-Cantabrian Basin (Northern Spain)20
- The Jurassic-Cretaceous Boundary and the Berriasian Stage in the Boreal Realm19
- Eocene agglutinated foraminifera from the Cambay Basin, India and their paleoecological significance16
- Ammonites, Microfauna, and Palynomorphs from the Lower Part of the Upper Bajocian Parkinsoni Zone of the Basin of the Bolshoi Zelenchuk River, Northern Caucasus14
- Palaeoclimatic and biotic changes during the Aalenian (Middle Jurassic) at the southern Laurasian Seaway (Basque–Cantabrian Basin, northern Spain)14
- Site U151213
- The Norian-Rhaetian boundary in the light of micropaleontological data10
- Integrated biostratigraphy and chemostratigraphy of the Maastrichtian–Danian succession at Abu Minqar, Egyptian Western Desert: Implications for sequence stratigraphy and tectonic influence9
Each of the 416 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. 86 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 content2

Picture of Trochammina
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Trochammina inflata · UT-JSG:NPL:00090233.000_1
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itTrochammininae through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Parker and Jones 1859