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Chasmataspidida ✝

Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)Not linked to a GBIF record.
PaleoBioDB ID (PBDB)18912https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=18912
Rankorder (PBDB)
Taxonomy (PBDB)Life : Animalia : Arthropoda : Xiphosura : Chasmataspidida
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-Bilateria
-EubilateriaAx 1987
-ProtostomiaGrobben 1908
-Ecdysozoa
-Panarthropoda
phylumArthropodaLatreille 1829
subphylumChelicerataHeymons 1901
-EuchelicerataWeygoldt and Paulus 1979
-ProsomapodaLamsdell 2013
classXiphosura
orderXiphosuridaLatreille 1802
-PlanatergaLamsdell 2013
-DekatriataLamsdell 2013
orderChasmataspididaCaster and Brooks 1956
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Chasmataspididaorderbelongs to Merostomatasecond handSepkoski, 2002
Chasmataspididaorderbelongs to Dekatriatastated with evidenceLamsdell, 2013
Status (PBDB)extinct
Taxon Size (PBDB)6
First Recorded Appearance468 - 461 Ma
Middle Ordovician
Last Recorded Appearance409 - 403 Ma
Early/Lower Devonian
Motilityactively mobile (based on Xiphosura)
Visionlimited (based on Xiphosurida)
Dietcarnivore (based on Xiphosura)
Primary Reference (PBDB)J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Diploaspididae
family
listed (PBDB)2411 Ma
Early/Lower Devonian
409 Ma
Early/Lower Devonian
Chasmataspis
genus
listed (PBDB)1468 Ma
Middle Ordovician
468 Ma
Middle Ordovician
Heteroaspis
genus
listed (PBDB)1409 Ma
Early/Lower Devonian
409 Ma
Early/Lower Devonian

Synonymy List

YearName and Author
1956Chasmataspidida Caster and Brooks
2002Chasmataspidida Sepkoski, Jr.
2013Chasmataspidida Lamsdell p. 20

References

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
Lamsdell J. C. (2013) Revised systematics of Palaeozoic 'horseshoe crabs' and the myth of monophyletic Xiphosura, Zoological Journal of the Linnean Society 167, 1-27
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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