Murchisonia
Searched as Murchisonia cf. scrabiculatus. The Paleobiology Database treats Murchisonia as the accepted name.

Ivtorov · 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
- MurchisoniidaePBDB
- Diet
- suspension feederPBDB
- Life habit
- epifaunalPBDB
- Motility
- actively mobilePBDB
- Vision
- limitedPBDB, for Murchisoniina
- Environment
- coastal,marinePBDB, for Murchisoniina
Time the record covers
At most 4.3 million years on record.
The one occurrence read is dated to somewhere between 449.5 Mya and 445.2 Mya, which is a dating window rather than a span.
1 occurrence of Murchisonia 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
Loading coastlines…
The named rock units Murchisonia has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Murchisonia and its relatives
OrdovicianWhere Murchisonia and its relatives were recorded in the Ordovician.
Found in the same rock
3,964 taxa- Crinoidea24 sites
- Loxonema24 sites
- Orthoceras19 sites
- Gastropoda18 sites
- Atrypa reticularis16 sites
- Bellerophon lineatus16 sites
- Ludwigia16 sites
- Eospirifer radiatus15 sites
- Nucleospira15 sites
- Philoxene laevis15 sites
- Atrypa14 sites
- Bivalvia14 sites
- Bryozoa14 sites
- Chonetes14 sites
- Favosites14 sites
- Stegerhynchus14 sites
- Whitfieldella14 sites
- Bellerophon13 sites
- Brachiopoda13 sites
- Dalmanites13 sites
- Euomphalus13 sites
- Schizophoria13 sites
- Calymene12 sites
- Ctenodonta12 sites
The Paleobiology Database records 255 sites for Murchisonia, and this reads 240 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 content2

Picture of Murchisonia
- Source
- Wikidata/Commons
- Credit
- Ivtorov
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- Shellie Luallin
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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 itMurchisoniidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (d'Archiac and de Verneuil 1841)