Illaenus
Illaenus is a genus of trilobites from Russia and Morocco, from the middle Ordovician.
| Illaenus | |
|---|---|
 | |
| Illaenus tauricornis from Russia. On display at the Museo Civico di Storia Naturale di Milano | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | |
| Family: | |
| Genus: | Illaenus Dalman, 1827 |
 |
Wikimedia Commons has media related to Illaenus. |
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
This genus includes about 50 species:
- Illaenus alveatus Raymond 1925
- Illaenus auriculatus Ross, Jr. & Barnes 1967
- Illaenus bayfieldi Billings 1859
- Illaenus bucculentus Whittington 1963
- Illaenus consimilis Billings 1865
- Illaenus consobrinus Billings 1865
- Illaenus crassicauda Wahlenberg 1826
- Illaenus fraternus Billings 1865
- Illaenus gelasinus Whittington 1965
- Illaenus lacertus Whittington 1954
- Illaenus marginalis Raymond 1925
- Illaenus oscitatus Fortey 1980
- Illaenus slancyensis Krylov 2016
- Illaenus spiculatus Whittington 1963
- Illaenus tauricornis Kutorga 1848
- Illaenus tumidifrons Billings 1865
- Illaenus utahensis Hintze 1952
- Illaenus welchi Loch & Ethington 2017
gollark: You simply multiply it by itself several times.
gollark: It seems like one of those powerful concepts I don't really understand.
gollark: https://ubq323.website/competition/3/
gollark: ++search matrix wikipedia
gollark: It seems like it could be true even though it isn't rigorous.
See also
- Ordovician fauna of Putilovo village
References
- Yvonne Howells, "Ordovician Trilobites of St. Petersburg Region"
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.