Odontopleurida
Odontopleurida is an order of very spinose trilobites closely related to the trilobites of the order Lichida. Some experts group the Odontopleurid families, Odontopleuridae and Damesellidae, within Lichida. Odontopleurids tend to have convex, bar-shaped cephalons, and lobed, knob-shaped glabella that extend to, or almost to the anterior margin. Many, if not almost all odontopleurids have long spines that are derived either from the margins of the exoskeleton, or from granular or tubercular ornamentation, or both. There are odontopleurids so spinose as to have spines on some of their spines. Odontopleurids have 8 to 13 thoracic segments, with Odontopleuridae odontopleurids having no more than 10, and Damesellidae odontopleurids having no more than 13. The pygidium tends to be very small, and invariably has long spines emanating from it in all known genera.
Daderot · CC0 · 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
- TrilobitaPBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 113 million years on record.
The record covers at least 488.9 Mya to 375.2 Mya. No occurrence read is dated outside 493.5 Mya to 372.15 Mya.
1,389 occurrences of Odontopleurida 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
1,389 occurrences- Cambrianunder 1%
- Ordovician36%
- Silurian40%
- Devonian24%
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
339 formations
- Cape Phillips Formation75
- Whittaker Formation64
- Delorme Formation53
- Jupiter Formation40
- Motol Formation31
- Becscie Formation · Anticosti Group31
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The named rock units Odontopleurida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 315 further formations hold fewer occurrences each and are not listed. 133 occurrences have no formation on record, which is common for older literature.
Odontopleurida and its relatives
SilurianWhere Odontopleurida and its relatives were recorded in the Silurian.
Found in the same rock
2,925 taxa- Leonaspis73 sites
- Ceratocephala56 sites
- Crinoidea44 sites
- Ostracoda40 sites
- Leptaena37 sites
- Gastropoda36 sites
- Nautiloidea33 sites
- Stenopareia29 sites
- Otarion28 sites
- Brachiopoda27 sites
- Skenidioides26 sites
- Orbiculoidea25 sites
- Rugosa25 sites
- Atrypa24 sites
- Onniella24 sites
- Bivalvia23 sites
- Ctenodonta22 sites
- Flexicalymene22 sites
- Primaspis22 sites
- Bryozoa21 sites
- Dudleyaspis20 sites
- Nuculites19 sites
- Climacograptus18 sites
- Kosovopeltis18 sites
The Paleobiology Database records 881 sites for Odontopleurida, 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
307 references- Silicified Silurian odontopleurid trilobites from the Mackenzie Mountains105
- Silurian Odontopleurinae (Trilobita) from the Cape Phillips Formation, Arctic Canada67
- Early Silurian trilobites of Anticosti Island, Québec, Canada64
- Trilobite assemblages in the Devonian of the Barrandian area and their relations to palaeoenvironments45
- The Bohemian Lower Devonian Stages39
- Silurian field excursions: Prague Basin (Barrandian), Bohemia35
- Silicified Middle Ordovician trilobites: the Odontopleuridae33
- Gradient ecology of a biotic invasion: biofacies of the type Cincinnatian Series (Upper Ordovician), Cincinnati, Ohio region, USA31
- Ecostratigraphy of Silurian trilobite assemblages of the Barrandian area, Czechoslovakia29
- Silicified Lower Devonian trilobites from New South Wales28
- A Revision of the Swedish Ordovician Odontopleuridae (Trilobita)27
- The biostratigraphy of the Ordovician of Bohemia25
Each of the 1,389 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. 295 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 content2
Picture of Odontopleurida
- Source
- Wikipedia/Commons
- Credit
- Daderot
- Licence
- CC0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Licence
- Free Standard
- Commercial use
- cannot be read from the licence given — check the record
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
- 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 itTrilobita through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Whittington 1959