Illaenus (Parillaenus)
Searched as Parillaenus. The Paleobiology Database treats Illaenus (Parillaenus) as the accepted name.
No picture of Illaenus (Parillaenus) was found. Wikidata and iDigBio were searched and had none. Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Illaenus (Parillaenus), or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- IllaenusPBDB
- Diet
- carnivorePBDB, for Corynexochida
- Life habit
- nektobenthicPBDB, for Corynexochida
- Motility
- actively mobilePBDB, for Corynexochida
- Vision
- well-developedPBDB, for Illaenus
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 30 million years on record.
The record covers at least 475.3 Mya to 445.2 Mya. No occurrence read is dated outside 481.7 Mya to 443.1 Mya.
53 occurrences of Illaenus (Parillaenus) 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
53 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
25 formations
- Boda Limestone Formation7
- Solvang Formation5
- Kullsberg Formation3
- Kullsberg Limestone Formation3
- Sørbakken Formation3
- Pagoda Formation3
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The named rock units Illaenus (Parillaenus) has been recovered from, largest first. Drawn where the rock is now, not where it formed. One further formation holds fewer occurrences and is not listed. 1 occurrence has no formation on record, which is common for older literature.
Illaenus (Parillaenus) and its relatives
OrdovicianWhere Illaenus (Parillaenus) and its relatives were recorded in the Ordovician.
Found in the same rock
541 taxa- Stygina minor7 sites
- Lonchodomas pennatus6 sites
- Platylichas laxatus6 sites
- Remopleurides6 sites
- Deacybele gracilis5 sites
- Flexicalymene (Onnicalymene) jemtlandica5 sites
- Harpidella5 sites
- Illaenus linnarssoni5 sites
- Raymondella5 sites
- Sphaerocoryphe punctata5 sites
- Stenopareia glaber5 sites
- Amphilichas dalecarlicus4 sites
- Amphilichas lineatus4 sites
- Calyptaulax norvegicus4 sites
- Decoroproetus4 sites
- Eobronteus laticauda4 sites
- Holotrachelus punctillosus4 sites
- Isocolus sjogreni4 sites
- Oxoplecia4 sites
- Pharostoma leptaenarum4 sites
- Phillipsinella preclara4 sites
- Staurocephalus4 sites
- Staurocephalus pilafrons4 sites
- Ambonychinia corrugata3 sites
The Paleobiology Database records 28 sites for Illaenus (Parillaenus), 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
21 references- Norwegian Upper Ordovician illaenid trilobites11
- The Trilobites of the Leptæna Limestone in Dalarne11
- Ordovician (Darriwilian-early Katian) trilobite faunas of northwestern Tarim, Xinjiang, China3
- Trilobites and biofacies of the Ordovician Pagoda Formation, Donggongsi of Zunyi, Guizhou Province, China3
- Late Caradoc-early Ashgill trilobites of the central Oslo Region, Norway3
- Late Caradoc - early Asghill trilobite distribution in the central Oslo Region, Norway3
- On the Chasmops series of Jemtland and Sodermanland (Tvaren)3
- Locality 9:1 Silurian Sequences at Särghaua Field Station2
- The Ashgill rocks of the Glyn Ceirog district, North Wales2
- The taphonomy of a trilobite fauna from an uppermost Katian echinoderm Lagerstäatte in South West Wales1
- The highest-latitude Foliomena Fauna (Upper Ordovician, Portugal) and its palaeogeographical and palaeoecological significance1
- A Kralodvorian (upper Katian, Upper Ordovician) benthic association from the Ferradosa Formation (central Portugal) and its significance for the redefinition and subdivision of the Kralodvorian Stage1
Each of the 53 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. 9 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 content0
No picture of Illaenus (Parillaenus) was found. Wikidata and iDigBio were searched and had none.
Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Illaenus (Parillaenus), or no answer at all. This entry cannot say which.
No 3D scan of Illaenus (Parillaenus) was found in Sketchfab.
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 itIllaenus through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Jaanusson 1954