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Illaenidae ✝

Photos

Photo Gallery

Bumastus milleri

Danville, Montgomery County, Missouri, USA

Bumastus ioxus

Niagara County, New York, USA

Bumastus ioxus

Niagara County, New York, USA

Bumastus milleri

Danville, Montgomery County, Missouri, USA

Bumastus ioxus

Niagara County, New York, USA

Bumastus ioxus

Niagara County, New York, USA

Bumastus milleri

Danville, Montgomery County, Missouri, USA

Bumastus ioxus

Niagara County, New York, USA

Description

The Illaenidae are a family of trilobites in the order Corynexochida. 223 currently accepted species in 24 genera are known from the Ordovician. Some scholars include the Panderiidae in the Illaenidae, but this is not generally supported.

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

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	3266655	https://www.gbif.org/species/3266655
PaleoBioDB ID (PBDB)	124262	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=124262

Rank

family

Taxonomy (GBIF,PBDB)

Life : Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae

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	Corynexochida	Kobayashi 1935
family	Illaenidae	Hawle and Corda 1847

Scientific Name

Illaenidae

Name Published In

Prodrom Mon. böhm. Trilob.: 41 (also published in 1848 in Abh. Königl.-böhm. Ges. Wiss., (5)5: 157)

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Illaenidae	family	belongs to Illaenacea	stated without evidence	Harrington and Leanza, 1957
Illaenidae	family	belongs to Corynexochida	stated with evidence	Whittington et al., 1997
Illaenidae	family	belongs to Corynexochida	stated without evidence	Fortey and Droser, 1999
Illaenidae	family	belongs to Illaenina	stated with evidence	Adrain, 2011
Illaenidae	family	belongs to Corynexochida	stated with evidence	Fortey and Bruton, 2013
Illaenidae	family	belongs to Illaenoidea	stated without evidence	Rabano et al., 2014

Status (PBDB)

extinct

Taxon Size (PBDB)

128

First Recorded Appearance

488 - 478 Ma
Paleozoic

Last Recorded Appearance

423 - 419 Ma
Paleozoic

Environment

marine (based on Trilobita)

Motility

actively mobile (based on Corynexochida)

Diet

carnivore (based on Corynexochida)

Ontogeny

molting,addition of parts (based on Trilobita)

Ecospace Comments

BODY SIZE: Based on component genera; 5 of 5 genera share 10 to < 100 length, 5 of 5 share 10 to < 100 width.

Taphonomy

low Mg calcite, chitin (based on Trilobita)

Primary Reference (PBDB)

R. A. Fortey and M. L. Droser. 1999. Trilobites from the Base of the Type Whiterockian (Middle Ordovician) in Nevada. Journal of Paleontology 73(2):182-201

Wikipedia

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

Fossil Distribution

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Illaeninae ✝ subfamily	listed (PBDB)
Panderinae ✝ subfamily	listed (PBDB)
Bumastoides ✝ genus	doubtful (GBIF) listed (PBDB)	99	472 Ma Early/Lower Ordovician	443 Ma Silurian
Bumastus ✝ genus	accepted (GBIF) listed (PBDB)	222	485 Ma Cambrian	423 Ma Silurian
Caudillaenus ✝ genus	accepted (GBIF) listed (PBDB)	1	467 Ma Middle Ordovician	467 Ma Middle Ordovician
Cryptonymus ✝ genus	doubtful (GBIF) listed (PBDB)
Deucalion ✝ genus	listed (PBDB)
Dysplanus ✝ genus	accepted (GBIF) listed (PBDB)	18	479 Ma Early/Lower Ordovician	450 Ma Late/Upper Ordovician
Eastonillaenus ✝ genus	accepted (GBIF) listed (PBDB)	2	466 Ma Middle Ordovician	456 Ma Late/Upper Ordovician
Ectillaenus ✝ genus	doubtful (GBIF) listed (PBDB)	58	479 Ma Early/Lower Ordovician	456 Ma Late/Upper Ordovician
Harpillaenus ✝ genus	accepted (GBIF) listed (PBDB)	4	472 Ma Early/Lower Ordovician	472 Ma Early/Lower Ordovician
Hyboaspis ✝ genus	accepted (GBIF) listed (PBDB)	8	472 Ma Early/Lower Ordovician	458 Ma Middle Ordovician
Hydrolaenus ✝ genus	doubtful (GBIF) listed (PBDB)
Illaenus ✝ genus	accepted (GBIF) listed (PBDB)	520	488 Ma Cambrian	433 Ma Silurian
Nanillaenus ✝ genus	accepted (GBIF) listed (PBDB)	31	479 Ma Early/Lower Ordovician	458 Ma Late/Upper Ordovician
Octillaenus ✝ genus	accepted (GBIF) listed (PBDB)	4	456 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Parillaenus ✝ genus	accepted (GBIF) listed (PBDB)	11	467 Ma Middle Ordovician	446 Ma Late/Upper Ordovician
Platillaenus ✝ genus	accepted (GBIF) listed (PBDB)	17	479 Ma Early/Lower Ordovician	458 Ma Late/Upper Ordovician
Ptilillaenus ✝ genus	doubtful (GBIF) listed (PBDB)	3	441 Ma Silurian	439 Ma Silurian
Stenopareia ✝ genus	accepted (GBIF) listed (PBDB)	318	472 Ma Early/Lower Ordovician	431 Ma Silurian
Thaleops ✝ genus	accepted (GBIF) listed (PBDB)	105	472 Ma Early/Lower Ordovician	450 Ma Late/Upper Ordovician
Ulugtella ✝ genus	doubtful (GBIF) listed (PBDB)	5	450 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Zbirovia ✝ genus	doubtful (GBIF) listed (PBDB)	10	466 Ma Middle Ordovician	450 Ma Late/Upper Ordovician
Zdicella ✝ genus	doubtful (GBIF) listed (PBDB)	3	458 Ma Late/Upper Ordovician	456 Ma Late/Upper Ordovician
Zetillaenus ✝ genus	doubtful (GBIF) listed (PBDB)	4	461 Ma Middle Ordovician	450 Ma Late/Upper Ordovician

Synonymy List

Year	Name and Author
1847	Illaenidae Hawle and Corda
1957	Illaenidae Harrington and Leanza
1997	Illaenidae Whittington et al. p. 299
1999	Illaenidae Fortey and Droser p. 192
2011	Illaenidae Adrain p. 105
2013	Illaenidae Fortey and Bruton
2014	Illaenidae Rabano et al. p. 367

References

Fortey R. A., Droser M. L. (1999) Trilobites from the Base of the Type Whiterockian (Middle Ordovician) in Nevada, Journal of Paleontology 73 2, 182-201

Harrington H. J., Leanza A. F. (1957) Ordovician trilobites of Argentina, Department of Geology, University of Kansas Special Publication. Lawrence: University of Kansas Press 1, 1-276

Whittington H. B., Chatterton B. D. E., et al (1997) Trilobita. Introduction, Order Agnostina, Order Redlichiida. Volume 1, Treatise on Invertebrate Paleontology O, 1-530

Adrain J. M. (2011) Class Trilobita Walch, 1771, Animal biodiversity: an outline of higher-level classification and survey of taxonomic richness 3148, 104-109

Fortey R. A., Bruton D. L. (2013) Lower Ordovician trilobites of the Kirtonryggen Formation, Spitsbergen, Fossils and Strata 59, 1-116

Rabano I., Gutiérrez-Marco J. C., et al (2014) A remarkable illaenid trilobite from the Middle Ordovician of Morocco, Bulletin of Geosciences 89 2, 365-374 doi:10.3140/bull.geosci.1467

International Commission on Zoological Nomenclature. Opinion 508 Use of the Plenary Powers to Ensure that the generic name Illaenus Dalman [1827] (class Trilobita) shall be the oldest available name for the genus concerned.Opinions and declarations rendered by the International Commission on Zoological Nomenclature 18(11), 211-226 (1958) - via Official Lists and Indexes of Names in Zoology

Benton, M.J. (ed). (1993). The Fossil Record 2. Chapman & Hall, London, 845 pp. - 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

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!

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