Nothorthis
Searched as Nothorthis marginata crassicosta. The Paleobiology Database treats Nothorthis as the accepted name.

via iDigBio · CC0 · via iDigBio. 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
- ArchaeorthidaePBDB
- Diet
- suspension feederPBDB, for Orthida
- Life habit
- epifaunalPBDB, for Orthida
- Motility
- stationary, attachedPBDB, for Orthida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At most 9.3 million years on record.
The one occurrence read is dated to somewhere between 486.4 Mya and 477.1 Mya, which is a dating window rather than a span.
1 occurrence of Nothorthis 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
1 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 Nothorthis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Nothorthis and its relatives
OrdovicianWhere Nothorthis and its relatives were recorded in the Ordovician.
Found in the same rock
453 taxa- Paurorthis parva19 sites
- Drepanoistodus forceps14 sites
- Productorthis aculeata14 sites
- Protopanderodus rectus14 sites
- Baltoniodus13 sites
- Ranorthis13 sites
- Drepanoistodus basiovalis12 sites
- Protoskenidioides11 sites
- Tritoechia10 sites
- Brachiopoda9 sites
- Euorthisina9 sites
- Periodon9 sites
- Punctolira8 sites
- Sinorthis8 sites
- Yangtzeella (Yangtzeella) poloi8 sites
- Cornuodus longibasis7 sites
- Lingulella7 sites
- Microzarkodina7 sites
- Trapezognathus quadrangulum7 sites
- Antigonambonites6 sites
- Nocturnellia6 sites
- Orthambonites6 sites
- Paralenorthis serica6 sites
- Saucrorthis6 sites
The Paleobiology Database records 76 sites for Nothorthis, 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
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 the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Nothorthis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Nothorthis 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 itArchaeorthidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Ulrich and Cooper 1938