Thectardis avalonensis

Apokryltaros · 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
- ThectardisPBDB
- Diet
- suspension feederPBDB
- Life habit
- epifaunalPBDB
- Motility
- stationary, attachedPBDB
- Vision
- blindPBDB, for Thectardis
- Environment
- outer shelf,marinePBDB
Time the record covers
At most 97 million years on record.
Every occurrence read is dated to somewhere between 635 Mya and 538.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
9 occurrences of Thectardis avalonensis 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
9 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
5 formations
- Drook Formation · Conception Group3
- Mistaken Point Formation · Conception Group3
- Bradgate Formation · Maplewood Group1
- Briscal Formation · Conception Group1
- Trepassey Formation · St. Johns Group1
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The named rock units Thectardis avalonensis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Found in the same rock
26 taxa- Charnia masoni7 sites
- Charniodiscus procerus4 sites
- Primocandelabrum4 sites
- Arborea spinosa3 sites
- Aspidella3 sites
- Charniodiscus3 sites
- Culmofrons plumosa3 sites
- Hadryniscala avalonica3 sites
- Hapsidophyllas flexibilis3 sites
- Ivesheadiomorpha indet.3 sites
- Pectinifrons abyssalis3 sites
- Primocandelabrum hiemaloranum3 sites
- Trepassia wardae3 sites
- Beothukis mistakensis2 sites
- Bradgatia linfordensis2 sites
- Broccoliforma alta2 sites
- Fractofusus andersoni2 sites
- Vinlandia antecedens2 sites
- Animalia1 site
- Arborea arborea1 site
- Auroralumina attenboroughii1 site
- Avalofractus abaculus1 site
- Bradgatia1 site
- Fractofusus misrai1 site
The Paleobiology Database records 9 sites for Thectardis avalonensis, 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
3 references- A Chronostratigraphic Framework for the Rise of the Ediacaran Macrobiota: New Constraints from Mistaken Point Ecological Reserve, Newfoundland4
- Thectardis avalonensis: a new Ediacaran fossil from the Mistaken Point biota, Newfoundland4
- A rich Ediacaran assemblage from eastern Avalonia: Evidence of early widespread diversity in the deep ocean1
Each of the 9 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. 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 Thectardis avalonensis
- Source
- Wikidata/Commons
- Credit
- Apokryltaros
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Thectardis avalonensis 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 itThectardis through time
Occurrence data from the Paleobiology Database, CC BY 4.0. Clapham et al. 2004