Thelodus parvidens

Agassiz, in Murchison, 1839 · CC BY-SA 4.0 · 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
- ThelodusPBDB
- Motility
- actively mobilePBDB, for Chordata
Time the record covers
At least 19 million years on record.
The record covers at least 440.5 Mya to 421.3 Mya. No occurrence read is dated outside 443.1 Mya to 419.62 Mya.
110 occurrences of Thelodus parvidens on record, most of them in the Silurian. 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
110 occurrences- Silurian100%
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
29 formations
- Upper Whitcliffe Formation18
- Ludlow Bone Bed Formation18
- Downton Castle Sandstone Formation · Whitcliffe Group17
- Whitcliffe Formation17
- Lower Whitcliffe Formation3
- Long Quarry Formation2
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The named rock units Thelodus parvidens has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 further formations hold fewer occurrences each and are not listed. 7 occurrences have no formation on record, which is common for older literature.
Thelodus parvidens and its relatives
SilurianWhere Thelodus parvidens and its relatives were recorded in the Silurian.
Found in the same rock
138 taxa- Paralogania ludlowiensis25 sites
- Thelodus trilobatus24 sites
- Acanthodii19 sites
- Ozarkodina confluens15 sites
- Coryssognathus dubius14 sites
- Nostolepis striata9 sites
- Thelodus pugniformis9 sites
- Wurmiella excavata8 sites
- Loganellia7 sites
- Gomphodus6 sites
- Panderodus serratus5 sites
- Katoporus4 sites
- Nostolepis gracilis4 sites
- Onchus tenuistriatus4 sites
- Calymene3 sites
- Ozarkodina remscheidensis baccata3 sites
- Strosipherus3 sites
- Tolypelepis undulata3 sites
- Andreolepis hedei2 sites
- Delthyris (Delthyris) elevata2 sites
- Frostiella2 sites
- Gomphonchus sandelensis2 sites
- Katoporus tricavus2 sites
- Londinia2 sites
The Paleobiology Database records 59 sites for Thelodus parvidens, 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
9 references- Thelodonts and distribution of associated conodonts from the Llandovery-lowermost Lochkovian of the Welsh Borderland62
- Siluro-Devonian thelodonts from the Welsh Borderland34
- Distribution of vertebrates in the Silurian of Estonia8
- Ludfordian conodonts from the Kaarma Quarry, Estonia1
- Locality 7:3 Kaugatuma Cliff1
- Locality 7 :2 Kudjape Ditch1
- Locality 7:4 Ohesaare Cliff1
- Faunas from the Upper Silurian (Upper Ludlovian) in the Ludlow-Much Wenlock District, England1
- A synopsis of the classification of the British Palaeozoic rocks, with a systematic description of the British Palaeozoic fossils.Fasciculus 3, Mollusca and Palaeozoic fishes1
Each of the 110 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. 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 Thelodus parvidens
- Source
- Wikidata/Commons
- Credit
- Agassiz, in Murchison, 1839
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Thelodus parvidens 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 itThelodus through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Agassiz 1839