Helicolocellus cantori
Helicolocellus cantori is an extinct sponge from the late Ediacaran of China, and possibly related to the Hexactinellida. It is a monotypic genus, containing only H. cantori, and if confirmed, would be the oldest crown group sponge known as of 2024.

DevonHalDraedle · CC BY-SA 4.0 · via Wikipedia/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
- HelicolocellusPBDB
- Diet
- suspension feederPBDB, for Porifera
- Life habit
- epifaunalPBDB, for Porifera
- Motility
- stationary, attachedPBDB, for Porifera
- Vision
- blindPBDB, for Porifera
Time the record covers
At most 97 million years on record.
The one occurrence read is dated to somewhere between 635 Mya and 538.8 Mya, which is a dating window rather than a span.
1 occurrence of Helicolocellus cantori on record. 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
1 occurrencesThese 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 Helicolocellus cantori has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Found in the same rock
21 taxa- Arborea1 site
- Arborea arborea1 site
- Arborea denticulata1 site
- Aspidella1 site
- Charnia1 site
- Charniidae1 site
- Curviacus1 site
- Dickinsonia costata1 site
- Flabellophyton typicum1 site
- Hiemalora pleiomorpha1 site
- Lamonte trevallis1 site
- Oscillatoriopsis obtusa1 site
- Palaeopascichnidae indet.1 site
- Paracharnia dengyingensis1 site
- Pteridinium simplex1 site
- Rangea schneiderhoehni1 site
- Streptichnus1 site
- Vendotaenia1 site
- Wutubus annularis1 site
- Yichnus levis1 site
- Yilingia spiciformis1 site
The Paleobiology Database records 1 site for Helicolocellus cantori, 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 1 occurrence 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Helicolocellus cantori
- Source
- Wikipedia/Commons
- Credit
- DevonHalDraedle
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Helicolocellus cantori was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHelicolocellus through time
Occurrence data from the Paleobiology Database, CC BY 4.0. Wang et al. 2024