Balizoma
Encyclopedia
Balizoma is a genus of trilobite
from the family Encrinuridae
. It has only been found in rocks of Silurian
age. Its type species
, B. variolaris, was named by Alexandre Brongiart in 1822, and is found in Dudley, England
,.
Trilobite
Trilobites are a well-known fossil group of extinct marine arthropods that form the class Trilobita. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period , and they flourished throughout the lower Paleozoic era before...
from the family Encrinuridae
Encrinuridae
Encrinuridae is a family of trilobite within the order Phacopida that lived in what would be Africa, Asia, Australia, Europe, North America, and South America from the middle Ordovician to the early Devonian from , existing for approximately .-Taxonomy:...
. It has only been found in rocks of Silurian
Silurian
The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.7 ± 1.5 Mya , to the beginning of the Devonian Period, about 416.0 ± 2.8 Mya . As with other geologic periods, the rock beds that define the period's start and end are well identified, but the...
age. Its type species
Type species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...
, B. variolaris, was named by Alexandre Brongiart in 1822, and is found in Dudley, England
Dudley
Dudley is a large town in the West Midlands county of England. At the 2001 census , the Dudley Urban Sub Area had a population of 194,919, making it the 26th largest settlement in England, the second largest town in the United Kingdom behind Reading, and the largest settlement in the UK without...
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Sources
- Adrain, JM and GD Edgecombe, 1995, Balizoma and the new genera Aegrotocatellus and Perirehaedulus; encrinurid trilobites from the Douro Formation (Silurian, Ludlow) of the central Canadian Arctic, Journal of Paleontology 69(4).
- Tripp, RP, JT Temple, & KC Gass, 1977, The Silurian trilobite Encrinurus variolaris and allied species, with notes on Frammia, Palaeontology 20.
- Balizoma at the Paleobiology DatabasePaleobiology Database' is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms.-History:The Paleobiology Database was founded in 2000. It has been funded by the National Science Foundation and the Australian Research Council...