Encrinurus
Encrinurus is a long-lived genus of phacopid trilobites that lived in what are now Africa, Asia, Australia, Europe, North America, and South America from the middle Ordovician to the early Devonian from 472 to 412.3 mya, existing for approximately 59.7 million years.
Squalicorax1234 · CC BY-SA 3.0 · via Wikipedia/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
- EncrinurinaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 48 million years on record.
The record covers at least 468 Mya to 419.62 Mya. No occurrence read is dated outside 477.1 Mya to 413.02 Mya.
344 occurrences of Encrinurus 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
344 occurrences- Ordovician14%
- Silurian86%
- Devonianunder 1%
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
129 formations
- Jupiter Formation · Anticosti Group37
- Read Bay Formation11
- Wether Law Linn Formation10
- White Head Formation9
- Scotch Grove Formation9
- Gun River Formation9
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The named rock units Encrinurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 105 further formations hold fewer occurrences each and are not listed. 37 occurrences have no formation on record, which is common for older literature.
Encrinurus and its relatives
SilurianWhere Encrinurus and its relatives were recorded in the Silurian.
Found in the same rock
2,268 taxa- Calymene64 sites
- Favosites54 sites
- Atrypa42 sites
- Bryozoa34 sites
- Atrypa reticularis33 sites
- Heliolites33 sites
- Bumastus30 sites
- Crinoidea30 sites
- Dalmanites29 sites
- Gastropoda29 sites
- Leptaena rhomboidalis28 sites
- Eospirifer radiatus27 sites
- Proetus27 sites
- Syringopora24 sites
- Beyrichia23 sites
- Brachiopoda23 sites
- Isorthis23 sites
- Resserella23 sites
- Stenopareia23 sites
- Leptaena22 sites
- Otarion22 sites
- Acernaspis orestes21 sites
- Halysites21 sites
- Orthoceras21 sites
The Paleobiology Database records 313 sites for Encrinurus, 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
116 references- Early Silurian trilobites of Anticosti Island, Québec, Canada45
- Scottish Silurian trilobites18
- Animal and plant communities of Podolia17
- Silurian Reefs of Gotland14
- The Clinton of Western and Central New York10
- Silurian trilobite associations in North America8
- Correlation of the Silurian rocks of China8
- Llandovery trilobites from Washington Land, North Greenland8
- Anticosti Island, Québec7
- Wenlock trilobites and brachiopods from the Mackenzie Mountains, north-western Canada7
- Cornwallis and Little Cornwallis Islands, District of Franklin, Northwest Territories7
- Silurian brachiopod and related benthic communities from carbonate platform and mound environments of Iowa and surrounding areas6
Each of the 344 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. 104 further references are not listed. 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 Encrinurus
- Source
- Wikipedia/Commons
- Credit
- Squalicorax1234
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Encrinurus was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Encrinurus”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itEncrinurinae through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Emmrich 1844