Onychoplecia

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
- TriplesiidaePBDB
- Diet
- suspension feederPBDB, for Brachiopoda
- Life habit
- low-level epifaunalPBDB, for Brachiopoda
- Motility
- stationary, attachedPBDB, for Brachiopoda
- Vision
- blindPBDB, for Strophomenata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 18 million years on record.
The record covers at least 470.3 Mya to 451.8 Mya. No occurrence read is dated outside 471.3 Mya to 449.6 Mya.
61 occurrences of Onychoplecia 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
61 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
15 formations
- Crown Point Formation · Chazy Group19
- Valcour Formation · Chazy Group10
- Day Point Formation · Chazy Group9
- Lenoir Formation3
- Bromide Formation3
- Hirmuse Formation3
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The named rock units Onychoplecia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Onychoplecia and its relatives
OrdovicianWhere Onychoplecia and its relatives were recorded in the Ordovician.
Found in the same rock
375 taxa- Leperditia canadensis25 sites
- Multicostella platys21 sites
- Bucania sulcatina16 sites
- Isotelus harrisi16 sites
- Raphistoma stamineum15 sites
- Thaleops ovata15 sites
- Macrocoelia champlainensis14 sites
- Sphenotreta acutirostris14 sites
- Stenopareia globosus13 sites
- Mimella vulgaris12 sites
- Rafinesquina alternata12 sites
- Calyptaulax annulata11 sites
- Eurychilina latimarginata11 sites
- Maclurites magnus11 sites
- Pliomerops canadensis10 sites
- Hibbertia valcourensis9 sites
- Phylloporina incepta9 sites
- Amphilichas minganensis8 sites
- Basilicus (Basiliella) whittingtoni8 sites
- Camerella varians8 sites
- Dactylogonia incrassata8 sites
- Rostricellula plena8 sites
- Stictopora fenestrata8 sites
- Archinacella deformata7 sites
The Paleobiology Database records 61 sites for Onychoplecia, 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
11 references- The Chazy Formation and its fauna33
- Chazyan and related brachiopods12
- The Brachiopoda and Ostracoda of the Chazyan4
- Lithology and Fauna of the Caradoc series type sections in North Estonia3
- Biostratigraphic and paleontological studies2
- Fossils from the Ordovician bioherm at Meiklejohn Peak, Nevada2
- Middle to late Ordovician fossiliferous rocks of the Montreal area1
- A trilobite zonation of Middle Ordovician rocks, southwestern District of Mackenzie1
- Geology of the Central Great Smoky Mountains of Tennessee1
- Some Brachiopods from Ordovician Estonia (Nekotorye Brachiopody iz Ordovika Estonii)1
- Ordovician Chazy Group in southern Quebec1
Each of the 61 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. 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 Onychoplecia
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Onychoplecia 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itTriplesiidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Cooper 1956