Illaenusis agenusoftrilobitesfromRussiaandMorocco,from the middleOrdovician.
| Illaenus Temporal range:
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| Illaenus tauricornisfrom Russia. On display at theMuseo Civico di Storia Naturale di Milano | |
Scientific classification
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Trilobita |
| Order: | †Corynexochida |
| Family: | †Illaenidae |
| Genus: | †Illaenus Dalman,1827 |
Species included in this genus can reach a length of about 57 millimetres (2.2 in). They are without glabella and without articulation of the tail. The cephalon has a high profile and recurved genal spines. Eyes are distant from the axis of the head, situated nearer to the edge.[1][2]
Selected species
editThis genus includes about 50 species:[3]
- †Illaenus alveatusRaymond 1925
- †Illaenus auriculatusRoss Jr. & Barnes 1967
- †Illaenus bayfieldiBillings 1859
- †Illaenus bucculentusWhittington 1963
- †Illaenus consimilisBillings 1865
- †Illaenus consobrinusBillings 1865
- †Illaenus crassicaudaWahlenberg 1826
- †Illaenus fraternusBillings 1865
- †Illaenus gelasinusWhittington 1965
- †Illaenus lacertusWhittington 1954
- †Illaenus marginalisRaymond 1925
- †Illaenus oscitatusFortey 1980
- †Illaenus slancyensisKrylov 2016
- †Illaenus spiculatusWhittington 1963
- †Illaenus tauricornisKutorga 1848
- †Illaenus tumidifronsBillings 1865
- †Illaenus utahensisHintze 1952
- †Illaenus welchiLoch & Ethington 2017
See also
editReferences
edit- ^Archive.org
- ^Fossil Museum
- ^"Illaenus".Paleobiology Database.Retrieved2 December2015.
- Yvonne Howells, "Ordovician Trilobites of St. Petersburg Region"
External links
edit
Wikimedia Commons has media related toIllaenus.
- Russian Trilobites
- Saint Petersburg Paleontological LaboratoryArchived2012-03-24 at theWayback Machine
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