Angelina (trilobite)
| Angelina Temporal range: Lower Ordovician | |
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| Angelina sedgwicki | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Trilobita |
| Order: | Ptychopariida |
| Suborder: | Olenina |
| Family: | Olenidae |
| Subfamily: | Triarthrinae |
| Genus: | Angelina Salter, 1859 |
| Species | |
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| Synonyms | |
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Keidelaspis | |
Angelina is a genus of trilobite that lived during the Lower Ordovician (upper Tremadocian). It is known from Wales and South America. It differs from most other Triarthrinae in being larger, with a relatively narrow central raised area of the headshield (or glabella), with the occipital ring at the back of the glabella not well defined, and obscure lateral furrows. The eyes are placed midlength the headshield (or cephalon). The facial sutures converge on the front border at the midline. It also has very long and broad genal spines.[1]
References
- ↑ Moore, R.C. (1959). Arthropoda I - Arthropoda General Features, Proarthropoda, Euarthropoda General Features, Trilobitomorpha. Treatise on Invertebrate Paleontology. Part O. Boulder, Colorado/Lawrence, Kansas: Geological Society of America/University of Kansas Press. pp. 1–560. ISBN 0-8137-3015-5.
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