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Agraulidae ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	3266886	https://www.gbif.org/species/3266886
PaleoBioDB ID (PBDB)	133144	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=133144

Rank

family

Taxonomy (GBIF)

Life : Animalia : Arthropoda : Trilobita : Ptychopariida : Agraulidae

Taxonomy (PBDB)

Life : Animalia : Arthropoda : Trilobita : Redlichiida : Agraulidae

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	Redlichiida	Richter 1932
suborder	Redlichiina	Richter 1932
superfamily	Ellipsocephaloidea	Lin 1990
family	Agraulidae	Raymond 1913

Scientific Name

Agraulidae

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Agraulidae	family	belongs to Ptychopariida	stated with evidence	Whittington et al., 1997
Agraulidae	family	belongs to Solenopleuracea	stated with evidence	Geyer and Landing, 2001
Agraulidae	family	belongs to Ellipsocephaloidea	stated without evidence	Pour and Popov, 2009
Agraulidae	family	belongs to Ellipsocephaloidea	stated with evidence	Adrain, 2011

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

520 - 516 Ma
Cambrian

Last Recorded Appearance

501 - 485 Ma
Cambrian

Environment

marine (based on Trilobita)

Motility

fast-moving (based on Redlichiida)

Vision

well-developed

Diet

deposit feeder (based on Redlichiida)

Ontogeny

molting,addition of parts (based on Trilobita)

Taphonomy

low Mg calcite, chitin (based on Trilobita)

Primary Reference (PBDB)

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

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Agaso ✝ genus	doubtful (GBIF) listed (PBDB)		4	513 Ma Cambrian	513 Ma Cambrian
Agraulos ✝ genus	accepted (GBIF) listed (PBDB)		21	513 Ma Cambrian	501 Ma Cambrian
Arionellus genus	accepted (GBIF)	No associated record in PBDB
Batenioides ✝ genus	doubtful (GBIF) listed (PBDB)		4	516 Ma Cambrian	516 Ma Cambrian
Benxiaspis ✝ genus	accepted (GBIF) listed (PBDB)		4	516 Ma Cambrian	513 Ma Cambrian
Chittidilla ✝ genus	accepted (GBIF) listed (PBDB)		8	516 Ma Cambrian	516 Ma Cambrian
Litavkaspis ✝ genus	doubtful (GBIF) listed (PBDB)		3	513 Ma Cambrian	513 Ma Cambrian
Metagraulos ✝ genus	accepted (GBIF) listed (PBDB)		3	513 Ma Cambrian	513 Ma Cambrian
Parachittidilla ✝ genus	accepted (GBIF) listed (PBDB)		5	513 Ma Cambrian	513 Ma Cambrian
Paragraulos ✝ genus	accepted (GBIF) listed (PBDB)		3	516 Ma Cambrian	516 Ma Cambrian
Plesiagraulos ✝ genus	accepted (GBIF) listed (PBDB)		7	513 Ma Cambrian	513 Ma Cambrian
Poriagraulos ✝ genus	accepted (GBIF) listed (PBDB)		6	513 Ma Cambrian	513 Ma Cambrian
Proampyx ✝ genus	accepted (GBIF) listed (PBDB)		12	520 Ma Cambrian	501 Ma Cambrian
Protochittidilla ✝ genus	doubtful (GBIF) listed (PBDB)		1	513 Ma Cambrian	513 Ma Cambrian
Pseudoeteraspis ✝ genus	doubtful (GBIF) listed (PBDB)		2	516 Ma Cambrian	513 Ma Cambrian
Pseudoplesiagraulos ✝ genus	accepted (GBIF) listed (PBDB)		2	516 Ma Cambrian	516 Ma Cambrian
Qiannanagraulos ✝ genus	accepted (GBIF) listed (PBDB)		3	516 Ma Cambrian	516 Ma Cambrian
Skreiaspis ✝ genus	accepted (GBIF) listed (PBDB)		13	513 Ma Cambrian	505 Ma Cambrian
Tangshihlingia ✝ genus	accepted (GBIF) listed (PBDB)		1	501 Ma Cambrian	501 Ma Cambrian

Synonymy List

Year	Name and Author
1913	Agraulidae Raymond
1997	Agraulidae Whittington et al. p. 302
2001	Agraulidae Geyer and Landing
2009	Agraulidae Pour and Popov
2011	Agraulidae Adrain p. 104

References

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

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

Pour M. G., Popov L. E. (2009) Silicified Middle Cambrian trilobites from Kyrgystan, Palaeontology 52 5, 1039-1056

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

Benton, M.J. (ed). (1993). The Fossil Record 2. Chapman & Hall, London, 845 pp. - via The Interim Register of Marine and Nonmarine Genera

Museum Victoria KEmu database (Oct 2006) - 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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