''Diacalymene'' is a genus of
trilobite
Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the ...
from the order
Phacopida
Phacopida ("lens-face") is an order of trilobites that lived from the Late Cambrian to the Late Devonian. It is made up of a morphologically diverse assemblage of taxa in three related suborders.
Characteristics
Phacopida had 8 to 19 thoraci ...
, suborder
Calymenina
Calymenina is a suborder of the trilobite order Phacopida
Phacopida ("lens-face") is an order of trilobites that lived from the Late Cambrian to the Late Devonian. It is made up of a morphologically diverse assemblage of taxa in three related ...
. It includes the species ''D. ouzregui'', ''D. clavicula'', ''D. diademata'' and ''D. gabrielsi''.
It lived in the
Ordovician
The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya.
T ...
and
Silurian periods.
Distribution
Fossils of the genus have been found in:
[''Diacalymene'']
at Fossilworks.org
;Ordovician
*
Cabano
Cabano is a former city in Témiscouata Regional County Municipality within the Bas-Saint-Laurent region of Quebec, Canada. It is situated on Lake Témiscouata on Autoroute 85. On May 5, 2010 it merged with Notre-Dame-du-Lac to form the new city ...
,
Jupiter
Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but slightly less than one-thousandth t ...
and
White Head Formations,
Quebec
Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...
,
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...
*
Dufton Shale,
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...
;Silurian
*
Lipeón Formation,
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...
*
Cariy Sandstone,
Paraguay
Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...
*
Motol and
Zelkovice Formations,
Czech Republic
The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...
*
Henryhouse Formation and
St. Clair Limestone,
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
References
Calymenidae
Ordovician trilobites
Silurian trilobites
Ordovician first appearances
Silurian extinctions
Trilobites of North America
Paleozoic life of the Northwest Territories
Paleozoic life of Quebec
Fossils of Canada
Silurian trilobites of South America
Silurian Argentina
Fossils of Argentina
Silurian Paraguay
Fossils of Paraguay
Fossil taxa described in 1927
{{phacopida-stub