Agnostus

Agnostus
Temporal range: upper Middle Cambrian–lower Upper Cambrian
Disarticulated cephalons and pygidia of Agnostus pisiformis, from Kinnekulle, Sweden
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: †Trilobita (?)
Order: †Agnostida
Family: †Agnostidae
Genus: †Agnostus
Brongniart, 1822
subgenera
  • Agnostus (Agnostus)
    • type A. pisiformis (Wahlenberg, 1818) synonym Entomostracites pisiformes
  • Agnostus (Homagnostus) (Howell, 1935)
    • type A. (Homagnostus) obesus (Belt, 1867) synonym A. pisiformis var. obesus, Homagnostus obesus

and see text

Agnostus[1] is a genus of agnostid trilobites, belonging to the family Agnostidae, that lived during the late Middle Cambrian – early Upper Cambrian (about 506 to 492 million years ago). It is the type genus of the family Agnostidae and is subdivided into two subgenera, Agnostus and Homagnostus.[2][3]

  1. ^ WAHLENBERG G. 1818. Petrifacta Telluris Svecanae. Nova Acta R. Soc. Sci. Upsalla. 8, 1-116, pls. 1-4.
  2. ^ "Agnostus". Paleobiology Database. Retrieved 16 November 2012.
  3. ^ Morphology, Ontogeny, and Life Habit of Agnostus pisiformis From the Upper Cambrian of Sweden - Number 19