Pseudomera

via iDigBio · 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
- PliomeridaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Pliomeridae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 3.3 million years on record.
The record covers at least 471.3 Mya to 468 Mya. No occurrence read is dated outside 488.9 Mya to 457.3 Mya.
93 occurrences of Pseudomera 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
93 occurrences- Cambrianunder 1%
- 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
20 formations
- Antelope Valley Formation · Pogonip Group22
- Table Point Formation · Table Head Group16
- Sunblood Formation7
- Wah Wah Formation · Pogonip Group7
- Oil Creek Formation · Simpson Group7
- Table Cove Formation · Table Head Group5
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The named rock units Pseudomera has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Pseudomera and its relatives
OrdovicianWhere Pseudomera and its relatives were recorded in the Ordovician.
Found in the same rock
352 taxa- Eoleperditia11 sites
- Uromystrum11 sites
- Illaenus10 sites
- Illaenus marginalis10 sites
- Leperditella10 sites
- Acidiphorus spinifer8 sites
- Nileus affinis8 sites
- Calycocoelia typicalis7 sites
- Cybelopsis7 sites
- Ectenonotus7 sites
- Lachnostoma latucelsum7 sites
- Nileus7 sites
- Paralenorthis minusculus7 sites
- Schmidtella7 sites
- Acidiphorus6 sites
- Anomalorthis6 sites
- Ectenonotus whittingtoni6 sites
- Illaenus fraternus6 sites
- Kawina6 sites
- Protocalymene6 sites
- Stegnopsis solitarius6 sites
- Xystocrania perforator6 sites
- Bairdiocypridella5 sites
- Bathyurus mackenziensis5 sites
The Paleobiology Database records 89 sites for Pseudomera, 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
26 references- Middle Ordovician Table Head Formation, western Newfoundland16
- Middle Ordovician (Whiterockian) trilobites from the Sunblood Formation, District of Mackenzie, Canada10
- Simpson Group (Middle Ordovician) trilobites of Oklahoma9
- Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada8
- Lower Ordovician trilobites from western Utah and eastern Nevadea7
- Lower Ordovician detailed stratigraphic sections for western Utah6
- Trilobites at the base of the Middle Ordovician, western United States5
- Species diversity patterns in some middle Ordovician communities from California-Nevada3
- Fossils from the Ordovician bioherm at Meiklejohn Peak, Nevada3
- Trilobites of the Ordovician Table Head Formation, western Newfoundland3
- Middle and Lower Ordovician Formations in Southernmost Nevada and Adjacent California3
- New fossil localities in the Middle Ordovician Table Point Formation, Bonne Bay Little Pond area, western Newfoundland2
Each of the 93 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. 14 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 Pseudomera
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itPliomeridae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Holliday 1942