Choiidae

Jean-Bernard Caron · 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
- ProtomonaxonidaPBDB
- Diet
- suspension feederPBDB, for Demospongiae
- Life habit
- intermediate-level epifaunalPBDB, for Demospongiae
- Motility
- stationary, attachedPBDB, for Demospongiae
- Vision
- blindPBDB, for Porifera
Time the record covers
At least 110 million years on record.
The record covers at least 521 Mya to 410.62 Mya. No occurrence read is dated outside 538.8 Mya to 399.5 Mya.
93 occurrences of Choiidae on record, most of them in the Cambrian. 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
93 occurrences- Cambrian95%
- Ordovician4%
- Devonian1%
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
21 formations
- Yu'anshan Formation16
- Burgess Shale Formation · Chancellor Group15
- Yuanshan Formation13
- Marjum Formation9
- Wheeler Shale Formation7
- Balang Formation7
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The named rock units Choiidae has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Choiidae and its relatives
CambrianWhere Choiidae and its relatives were recorded in the Cambrian.
Found in the same rock
767 taxa- Choia16 sites
- Choiaella radiata14 sites
- Misszhouia longicaudata14 sites
- Isoxys auritus13 sites
- Leanchoilia illecebrosa13 sites
- Arthropoda12 sites
- Heliomedusa orienta12 sites
- Naraoia spinosa12 sites
- Hazelia11 sites
- Kunmingella douvillei11 sites
- Lingulella11 sites
- Mafangscolex sinensis11 sites
- Naraoia11 sites
- Paraleptomitella dictyodroma11 sites
- Branchiocaris yunnanensis10 sites
- Hamptonia bowerbanki10 sites
- Isoxys paradoxus10 sites
- Porifera10 sites
- Protospongia10 sites
- Saetaspongia densa9 sites
- Choia carteri8 sites
- Choia hindei8 sites
- Cricocosmia jinningensis8 sites
- Isoxys8 sites
The Paleobiology Database records 44 sites for Choiidae, 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
34 references- Sponges of the Middle Cambrian Burgess Shale and Stephen Formations, British Columbia11
- A Cambrian soft-bodied biota after the first Phanerozoic mass extinction7
- Composition and tiering of the Cambrian sponge communities7
- The diverse radiodont fauna from the Marjum Formation of Utah, USA (Cambrian: Drumian)6
- Taphonomy and Palaeoecology of the Early Cambrian Chengjiang Biota from Eastern Yunnan, China6
- Diversity and species abundance patterns of the early Cambrian (Series 2, Stage 3) Chengjiang Biota from China5
- Lower Cambrian Burgess Shale-type fossil associations of South China5
- Spatial variation in the diversity and composition of the Lower Cambrian (Series 2, Stage 3) Chengjiang Biota, Southwest China4
- Exceptionally preserved nontrilobite arthropods and Anomalocaris from the Middle Cambrian of Utah4
- Paleoecology of the Greater Phyllopod Bed community, Burgess Shale3
- Lower Cambrian demosponges and hexactinellid sponges from Yunnan, China3
- Cambrian and Silurian sponges from North Greenland3
Each of the 93 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. 22 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 Choiidae
- Source
- Wikidata/Commons
- Credit
- Jean-Bernard Caron
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Choiidae 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 itProtomonaxonida through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Laubenfels 1925