Fritzolenellus

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Fritzolenellus
Temporal range: late Lower Cambrian (Lower Olenellus-zone) 524–518.5 Ma
Fritzolenellus truemani, North-East base of Mumm Peak above Mural Glacier, Alberta, Canada
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Trilobita
Order:
Redlichiida
Suborder:
Olenellina
Superfamily:
Olenelloidea
Family:
Laudoniidae
Subfamily:
Laudoniinae
Genus:
Fritzolenellus[1]

Lieberman, 1998
Species
  • F. truemani (Walcott, 1913), (type), synonym Olenellus truemani[1][2]
  • F. lapworthi (Peach & Horne, 1892), synonym Olenellus lapworthi[2][3]
  • F. reticulatus (Peach, 1894), synonym Olenellus reticulatus[2][3]

Fritzolenellus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites, with three known species.[2] It lived during the early part of the Botomian stage, which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period. Fritzolenellus occurred in parts of the paleocontinent Laurentia in what are now Northwestern Canada, Northwestern Scotland, and North-Greenland.

Headshield of Fritzolenellus truemani. Cephalon with outer test of cheeks exfoliated so as to show casts of radial canals. U.S. National Museum, Catalogue No. 60087

Fritzolenellus is the genus closest to the common ancestor of Mummaspis, Laudonia, the Biceratopsinae and the Bristoliinae. This clade is the sister group Wanneria walcottana and of the Holmiidae.

Etymology

Distribution

References

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