Quick Links : Mindat手册 The Rock H. Currier Digital Library Mindat Newsletter [Free Download]

主页关于 Mindat Mindat手册 Mindat的历史版权 Who We Are 联系我们于 Mindat.org刊登广告

捐赠给 Mindat Corporate Sponsorship 赞助板页已赞助的板页在 Mindat刊登广告的广告商于 Mindat.org刊登广告

Learning Center What is a mineral?The most common minerals on earth Information for Educators Mindat Articles The Elements The Rock H. Currier Digital Library Geologic Time

搜索矿物的性质搜索矿物的化学 Advanced Locality Search 随意显示任何一种矿物 Random Locality 使用minID搜索邻近产地 Search Articles 搜索词汇表更多搜索选项

Mindat手册添加新照片 Rate Photos 产区编辑报告 Coordinate Completion Report 添加词汇表项目

Mining Companies 统计会员列表 Mineral Museums Clubs & Organizations 矿物展及活动 The Mindat目录表设备设置 The Mineral Quiz

照片搜索 Photo Galleries Search by Color 今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集 Photography

BETA TEST - Fossil data and pages are very much experimental and under development. Please report any problems

Isotelus ✝

Photos

Photo Gallery

Isotelus iowensis

Lincoln County, Missouri, USA

Isotelus maximus

Adams County, Ohio, USA

Isotelus iowensis

Lincoln County, Missouri, USA

Isotelus maximus

Adams County, Ohio, USA

Isotelus iowensis

Lincoln County, Missouri, USA

Isotelus maximus

Adams County, Ohio, USA

Description

Isotelus is a genus of asaphid trilobites from the middle and upper Ordovician period, fairly common in the Northeastern United States, northwest Manitoba, southwestern Quebec and southeastern Ontario. One species, Isotelus rex, is currently the world's largest trilobite ever found as a complete fossil.

From Wikipedia article at https://en.wikipedia.org/wiki/Isotelus, which is released under the Creative Commons Attribution-Share-Alike License 3.0.

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4635813	https://www.gbif.org/species/4635813
PaleoBioDB ID (PBDB)	20000	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=20000

Rank

genus

Taxonomy (GBIF,PBDB)

Life : Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : Isotelus

Taxonomic Status (GBIF)

accepted

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Bilateria
-	Eubilateria	Ax 1987
-	Protostomia	Grobben 1908
-	Ecdysozoa
-	Panarthropoda
phylum	Arthropoda	Latreille 1829
subphylum	Mandibulata
class	Trilobita	Walch 1771
order	Asaphida	Salter 1864
superfamily	Asaphoidea	Salter 1864
family	Asaphidae	Burmeister 1843
subfamily	Isotelinae	Angelin 1854
genus	Isotelus	De Kay 1824

Scientific Name

Isotelus De Kay, 1824

Name Published In

Ann. Lyceum N. H. New York, 1 (6)

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Isotelus	subgenus	belongs to Asaphus	stated with evidence	Owen, 1852
Isotelus	genus	belongs to Asaphinae	stated without evidence	Phleger, 1933
Isotelus	genus	belongs to Isotelinae	stated with evidence	Henningsmoen, 1960
Isotelus	genus	belongs to Asaphida	second hand	Sepkoski, 2002
Isotelus	genus	belongs to Asaphidae	stated without evidence	Jell and Adrain, 2002

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

488 - 472 Ma
Paleozoic

Last Recorded Appearance

441 - 433 Ma
Silurian

Environment

marine (based on Trilobita)

Motility

fast-moving (based on Asaphida)

Vision

well-developed (based on Asaphidae)

Diet

deposit feeder (based on Asaphida)

Ontogeny

molting,addition of parts (based on Trilobita)

Ecospace Comments

BODY SIZE: Data from Harrington et al. (1959)

Taphonomy

low Mg calcite, chitin (based on Trilobita)

Primary Reference (PBDB)

J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560

Wikipedia

https://en.wikipedia.org/wiki/Isotelus

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Isotelus aktchokensis ✝ species	accepted (GBIF) listed (PBDB)		1	453 Ma Late/Upper Ordovician	453 Ma Late/Upper Ordovician
Isotelus bearsis species	accepted (GBIF)	No associated record in PBDB
Isotelus benjamini species	accepted (GBIF)	No associated record in PBDB
Isotelus brachycephalus species	accepted (GBIF)	No associated record in PBDB
Isotelus bradleyi ✝ species	accepted (GBIF) listed (PBDB)		2	461 Ma Middle Ordovician	461 Ma Middle Ordovician
Isotelus copenhagenensis ✝ species	accepted (GBIF) listed (PBDB)		8	458 Ma Late/Upper Ordovician	458 Ma Late/Upper Ordovician
Isotelus frognoensis ✝ species	accepted (GBIF) listed (PBDB)		1	456 Ma Late/Upper Ordovician	456 Ma Late/Upper Ordovician
Isotelus giganteus ✝ species	accepted (GBIF) listed (PBDB)
Isotelus gigas ✝ species	accepted (GBIF) listed (PBDB)		106	470 Ma Middle Ordovician	450 Ma Late/Upper Ordovician
Isotelus girvanensis species	accepted (GBIF)	No associated record in PBDB
Isotelus giselae species	accepted (GBIF)	No associated record in PBDB
Isotelus grayae species	accepted (GBIF)	No associated record in PBDB
Isotelus harrisi ✝ species	accepted (GBIF) listed (PBDB)		72	472 Ma Early/Lower Ordovician	466 Ma Middle Ordovician
Isotelus instabilis species	accepted (GBIF)	No associated record in PBDB
Isotelus iowensis ✝ species	accepted (GBIF) listed (PBDB)		10	461 Ma Middle Ordovician	461 Ma Middle Ordovician
Isotelus kimmswickensis ✝ species	accepted (GBIF) listed (PBDB)		1	461 Ma Middle Ordovician	461 Ma Middle Ordovician
Isotelus maximus ✝ species	accepted (GBIF) listed (PBDB)		30	461 Ma Middle Ordovician	450 Ma Late/Upper Ordovician
Isotelus megistos ✝ species	accepted (GBIF) listed (PBDB)		3	452 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Isotelus obtusum species	accepted (GBIF)	No associated record in PBDB
Isotelus parvirugosus ✝ species	accepted (GBIF) listed (PBDB)		10	468 Ma Middle Ordovician	461 Ma Middle Ordovician
Isotelus platyrhachis ✝ species	listed (PBDB)		4	461 Ma Middle Ordovician	458 Ma Late/Upper Ordovician
Isotelus rejuvenis species	accepted (GBIF)	No associated record in PBDB
Isotelus skapaneidos ✝ species	accepted (GBIF) listed (PBDB)
Isotelus spurius ✝ species	accepted (GBIF) listed (PBDB)		8	472 Ma Early/Lower Ordovician	458 Ma Late/Upper Ordovician
Isotelus susae ✝ species	accepted (GBIF) listed (PBDB)		10	461 Ma Middle Ordovician	452 Ma Late/Upper Ordovician
Isotelus violaensis ✝ species	accepted (GBIF) listed (PBDB)		2	461 Ma Middle Ordovician	461 Ma Middle Ordovician
Isotelus walcotti ✝ species	accepted (GBIF) listed (PBDB)		3	461 Ma Middle Ordovician	461 Ma Middle Ordovician

Obsolete Names

Name	Source	Taxon Rank	Taxonomy
Isoteles König, 1825	GBIF	genus	Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : *Isoteles*

Synonymy List

Year	Name and Author
1824	Isotelus Dekay
1852	Asaphus (Isotelus) Owen
1933	Isotelus Phleger, Jr. p. 18
1941	Isotelus Whittington p. 512
1960	Isotelus Henningsmoen
1981	Isotelus Owen
2002	Isotelus Jell and Adrain p. 389
2002	Isotelus Sepkoski, Jr.
2009	Isotelus Owens and Fortey

References

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560

Phleger, Jr. F. B. (1933) Notes on certain Ordovician faunas of the Inyo Mountains, California, Bulletin of the Southern California Academy of Sciences 32 1, 1-21

Whittington H. B. (1941) Silicified Trenton trilobites, Journal of Paleontology 15 5, 492-522

Henningsmoen G. (1960) The Middle Ordovician of the Oslo Region, Norway 13. Trilobites of the Family Asaphidae, Norsk Geologisk Tidsskrift 40, 203-257

Owen A. W. (1981) The Ashgill Trilobites of the Oslo Region, Norway, Palaeontographica Abteilung A 175, 1-88

Jell P. A., Adrain J. M. (2002) Available generic names for trilobites, Memoirs of the Queensland Museum 48 2, 331-553

Owens R. M., Fortey R. A. (2009) Silicified Upper Ordovician trilobites from Pai-Khoi, arctic Russia, Palaeontology 52 6, 1209-1220

Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera

SN2000: Brands, S. J. (compiler) 1989-2005. Systema Naturae 2000. Amsterdam, The Netherlands (2006 version). Available online at http://sn2000.taxonomy.nl/. - via The Interim Register of Marine and Nonmarine Genera

extinct group - via The Interim Register of Marine and Nonmarine Genera

Ann. Lyceum N. H. New York, 1 (6) - via The Interim Register of Marine and Nonmarine Genera

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

Quick NavTop Fossil Distribution Subtaxa Obsolete Names Synonymy List References

Go to top of page