Chirognathus tricostatus

Yale Peabody Museum · CC0 · via GBIF. 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
- ChirognathusPBDB
- Diet
- carnivorePBDB, for Conodonta
- Life habit
- nektonicPBDB, for Conodonta
- Motility
- actively mobilePBDB, for Conodonta
- Vision
- well-developedPBDB, for Conodonta
Time the record covers
At most 5.9 million years on record.
Every occurrence read is dated to somewhere between 458.2 Mya and 452.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Chirognathus tricostatus on record, most of them in the Ordovician. 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
2 occurrences- Ordovician100%
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
1 formation
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The named rock units Chirognathus tricostatus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Chirognathus tricostatus and its relatives
OrdovicianWhere Chirognathus tricostatus and its relatives were recorded in the Ordovician.
Found in the same rock
5 taxa- Panderodus gracilis2 sites
- Phragmodus undatus2 sites
- Tasmanognathus careyi2 sites
- Belodina compressa1 site
- Drepanodus1 site
The Paleobiology Database records 2 sites for Chirognathus tricostatus, 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 2 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 the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Chirognathus tricostatus
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Chirognathus tricostatus 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 itChirognathus through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Zhen et al. 2010