Fritzolenellus

Last updated

Fritzolenellus
Temporal range: late Lower Cambrian (Lower Olenellus-zone) 524–518.5  Ma
Fritzolenellus truemani USNM PAL 60084.jpg
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.

Contents

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 truemani USNM PAL 60087.jpg
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

Taxonomy

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

The generic name is a combination of the genus Olenellus , to which these species were originally assigned, [4] [5] and a reference to William Henry Fritz (1928-2009), a paleontologist who worked on olenelloid trilobites. The species names have the following derivation.

Distribution

Fritzolenellus truemani. A small, almost entire dorsal shield. U.S. National Museum, Catalogue No. 60089. Fritzolenellus truemani USNM PAL 60089.jpg
Fritzolenellus truemani. A small, almost entire dorsal shield. U.S. National Museum, Catalogue No. 60089.

Related Research Articles

<span class="mw-page-title-main">Charles Lapworth</span> English geologist

Charles Lapworth FRS FGS was a headteacher and an English geologist who pioneered faunal analysis using index fossils and identified the Ordovician period.

<i>Olenellus</i> Extinct genus of trilobites

Olenellus is an extinct genus of redlichiid trilobites, with species of average size. It lived during the Botomian and Toyonian stages (Olenellus-zone), 522 to 510 million years ago, in what is currently North-America, part of the palaeocontinent Laurentia.

Eoagnostus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the terminal Lower Cambrian (Toyonian), until the earliest Middle Cambrian.

Laudonia is an extinct genus of trilobites that 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. There are currently two named species assigned to it.

<i>Mummaspis</i>

Mummaspis is an extinct genus from a well-known class of fossil marine arthropods, the trilobites, with five known species. 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.

<i>Olenelloides</i>

Olenelloides armatus is an extinct, small sized olenelloid redlichiid trilobite arthropod. It lived during the later 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. The most conspicuous feature is the hexagonal head shield that carries 6 ray-like spines..

<i>Wanneria</i>

Wanneria is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the later 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. Wanneria walcottana is the only known species in this genus.

Elliptocephala is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived from the later part of the Tommotian to the upper Botomian. Elliptocephala can easily be confused with Ellipsocephalus, a trilobite genus of the Ptychopariida order.

<i>Buenellus</i> Species of trilobite (fossil)

Buenellus higginsi is an average size trilobite, which lived during the Lower Cambrian period, in what is now North-West Greenland. It is a prominent member of the Sirius Passet fauna. Buenellus higginsi is the only known species in the genus Buenellus.

<i>Callavia</i>

Callavia is an extinct, monotypic genus of trilobite arthropods. C. broegeri lived during the late Atdabanian stage, which lasted from 530 to 524 million years ago during the early part of the Cambrian Period in what are today Canada and the United States.

Cirquella is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Atdabanian stage, in the former continent Laurentia.

<i>Nevadella</i> Extinct genus of trilobites

Nevadella is an extinct genus of trilobites, fossil marine arthropods, with species of average size. It lived during the late Atdabanian stage, which lasted from 530 to 524 million years ago during the early part of the Cambrian Period.

<i>Mesonacis</i>

Mesonacis is an extinct genus of trilobite that lived during the Botomian, found in North-America, and the United Kingdom. Some of the species now regarded part of Mesonacis, have previously been assigned to Angustolenellus or Olenellus (Angustolenellus). Angustolenellus is now regarded a junior synonym of Mesonacis.

<i>Biceratopsinae</i>

The Biceratopsinae is an extinct subfamily of redlichiid trilobites within the family Biceratopsidae, with species of small to average size. Species belonging to this subfamily lived during the Toyonian stage, 516-513 million years ago, in the former continent of Laurentia, including what are today the South-Western United States and Canada.

Mesolenellus is an extinct genus of trilobites that lived during the lower Cambrian (Botomian), found in Greenland and Spitsbergen.

<i>Bristoliinae</i>

The Bristoliinae is an extinct subfamily of trilobites, fossil marine arthropods, with species of small to average size. Species belonging to this subfamily lived during the Botomian and Toyonian stage (Olenellus-zone), 522-513 million years ago, in the former continent of Laurentia, including what are today Mexico, the Appalachian Mountains and the south-western United States, and Canada.

Lochmanolenellus is an extinct genus of trilobites, fossil marine arthropods, with one small species, L. mexicana. It lived during the Botomian stage (Olenellus-zone), 522–513 million years ago, in the South-West of the former continent of Laurentia, in what are today Mexico, and the South-Western United States.

<i>Bristolia</i>

Bristolia is an extinct genus of trilobite, fossil marine arthropods, with eight or more small to average size species. It is common in and limited to the Lower Cambrian shelf deposits across the southwestern US, which constitutes part of the former paleocontinent of Laurentia.

Bolbolenellus is an extinct genus of trilobites, fossil marine arthropods, with five species attributed to it currently. It can be easily distinguished from all other trilobites by the combination of the absence of dorsal sutures in the head shield like all Olenellina, and a distinctly bulbous frontal lobe (L4) of the raised axial area in the head called glabella. The species lived at the end of the Lower Cambrian.

Ovatoryctocara is a genus of small corynexochid trilobites from the Cambrian, that lived in what now are Siberia, China, Greenland and Canada (Newfoundland). Ovatoryctocara can be recognised by the combination of the following characters: the central raised area of the cephalon is approximately cylindrical and has two rows of four triangular or round pits. The thorax only has 5 or 6 segments. The tailshield has an axis of 6 to 12 rings, the pleural furrows are well developed and the border is absent or narrow as a hair.

References

  1. 1 2 Lieberman, B.S. (1998). "Cladistic Analysis of the Early Cambrian Olenelloid Trilobites" (PDF). Journal of Paleontology. 72 (1): 59–78. Bibcode:1998JPal...72...59L. doi:10.1017/S0022336000024021. S2CID   86307339.[ permanent dead link ]
  2. 1 2 3 4 5 Lieberman, B.S. (1999). "Systematic Revision of the Olenelloidea (Trilobita, Cambrian)" (PDF). Bulletin of the Peabody Museum of Natural History. 45. Archived from the original (PDF) on 2012-05-26. Retrieved 2012-07-04.
  3. 1 2 3 4 Cowie, J.; McNamara, K.J. (1978). "Olenellus (Trilobita) from the Lower Cambrian Strata of North-West Scotland" (PDF). Palaeontology. 21 (3): 615–634. Archived from the original (PDF) on 2012-05-26. Retrieved 2012-07-04.
  4. 1 2 3 Peach, B.N.; Horne, J. (1892), "The Olenellus-zone in the North-West Highlands of Scotland", Quarterly Journal of the Geological Society of London, 48 (1–4): 227–242, doi:10.1144/gsl.jgs.1892.048.01-04.17, S2CID   140197589
  5. ↑ Peach, B.N. (1894). "Additions to the Fauna of the Olenellus-zone of the Northwest Highlands". Quarterly Journal of the Geological Society. 50 (1–4): 661–676. doi:10.1144/GSL.JGS.1894.050.01-04.44. S2CID   140724079.
  6. ↑ Geyer, G.; Peel, J.S. (2011). "The Henson Gletscher Formation, North-Greenland, and its bearing on the global Cambrian Series 2-Series 3 boundary" (PDF). Bulletin of Geosciences. 86 (3): 465–534. doi: 10.3140/bull.geosci.1252 .
  7. ↑ Stein, M. (2008). "Fritzolenellus lapworthi (Peache and Horne, 1892) from the lower Cambrian (Cambrian Series 2) Bastion Formation of North-East Greenland" (PDF). Bulletin of the Geological Society of Denmark. 56: 1–10. doi:10.37570/bgsd-2008-56-01.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.