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Dichentomum ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4804164	https://www.gbif.org/species/4804164
PaleoBioDB ID (PBDB)	176690	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=176690

Rank

genus

Taxonomy (GBIF)

Life : Animalia : Arthropoda : Insecta : Psocidiidae : Dichentomum

Taxonomy (PBDB)

Life : Animalia : Arthropoda : Insecta : Permopsocida : Psocidiidae : Dichentomum

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
-	Pancrustacea
superclass	Hexapoda	Latreille 1825
-	Cercofilata	Kukalová-Peck 1987
class	Insecta	Linnaeus 1758
-	Dicondylia
-	Paranotalia	Sroka et al. 2014
subclass	Pterygota	Brauer 1885
-	Neopterygota	Crampton 1924
infraclass	Neoptera	Martynov 1923
-	Clareocercaria	Prokop et al. 2017
-	Acercaria
order	Permopsocida
family	Psocidiidae	Tillyard 1926
genus	Dichentomum	Tillyard 1926

Scientific Name

Dichentomum Tillyard, 1926

Name Published In

Amer. J. Sci., (5) 11

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Dichentomum	genus	belongs to Dichentomidae	stated with evidence	Carpenter, 1933
Dichentomum	genus	belongs to Psocidiidae	stated with evidence	Carpenter, 1992

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

299 - 296 Ma
Paleozoic

Last Recorded Appearance

279 - 272 Ma
Permian

Environment

terrestrial (based on Insecta)

Motility

actively mobile (based on Arthropoda)

Taphonomy

chitin (based on Insecta)

Primary Reference (PBDB)

R. J. Tillyard. 1926. Kansas Permian Insects, Part 8: The Order Copeognatha. American Journal of Science, Series 5 11(64):315-349

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Dichentomum arroyo ✝ species	accepted (GBIF) listed (PBDB)		1	299 Ma Carboniferous	299 Ma Carboniferous
Dichentomum complexum ✝ species	accepted (GBIF) listed (PBDB)		1	290 Ma Permian	290 Ma Permian
Dichentomum grande ✝ species	accepted (GBIF) listed (PBDB)		1	290 Ma Permian	290 Ma Permian
Dichentomum latum ✝ species	accepted (GBIF) listed (PBDB)		1	290 Ma Permian	290 Ma Permian
Dichentomum minimum ✝ species	listed (PBDB)		2	290 Ma Permian	290 Ma Permian
Dichentomum parvulum ✝ species	accepted (GBIF) listed (PBDB)		1	290 Ma Permian	290 Ma Permian
Dichentomum tinctum ✝ species	accepted (GBIF) listed (PBDB)		15	290 Ma Permian	290 Ma Permian
Psocidium minimum species	accepted (GBIF)	No associated record in PBDB

Synonymy List

Year	Name and Author
1926	Dichentomum Tillyard p. 320
1926	Psocidium Tillyard p. 321
1926	Chaetopsocidium Tillyard p. 331
1926	Metapsocidium Tillyard p. 332
1926	Pentapsocidium Tillyard p. 334
1926	Permentomum Tillyard p. 335

Year	Name and Author
1933	Dichentomum Carpenter
1962	Dichentomum Zimmerman p. 1329
1992	Dichentomum Carpenter p. 192
1998	Dichentomum Novokshonov p. 44
2004	Dichentomum Rasnitsyn p. 227
2016	Dichentomum Huang et al.

References

Tillyard R. J. (1926) Kansas Permian Insects, Part 8: The Order Copeognatha, American Journal of Science, Series 5 11 64, 315-349 doi:10.2475/ajs.s5-11.64.315

Carpenter F. M. (1933) The Lower Permian Insects of Kansas. Part 6: Delopteridae, Protelytroptera, Plectoptera and a New Collection of Protodonata, Odonata, Megasecoptera, Homoptera and Psocoptera, Proceedings of the American Academy of Arts and Sciences 68 11, 411-505

Zimmerman J. R. (1962) Taxonomic names, in The Asthenohymen-Delopterum Bed: A New Leonardian Insect Horizon in the Wellington of Kansas and Oklahoma, Journal of Paleontology 36, 1319-1333

Carpenter F. M. (1992) , Treatise on Invertebrate Paleontology Part R, Arthropoda 4: Superclass Hexapoda 3/4, 1-655

Novokshonov V. G. (1998) Iskopaemye nasekomye Chekardy, Chekarda - Mestonakhozhdenie Permskikh Iskopaemykh Rasteniy i Nasekomykh, 25-54

Rasnitsyn A. P. (2004) Leposmatona, Caloneurida, Hypoperlida, Hemiptera, Palaeomanteida, Eoblattida, in Important new insect fossils from Carrizo Arroyo and the Permo-Carboniferous faunal boundary, Carboniferous-Permian transition, New Mexico Museum of Natural History and Science Bulletin 25, 215-246

Huang D. Y., Bechly G., et al (2016) New fossil insect order Permopsocida elucidates major radiation and evolution of suction feeding in hemimetabolous insects (Hexapoda: Acercaria), Scientific Reports 6 23004, 1-9

GBIF/Yale University Peabody Museum: Peabody Invertebrate Paleontology DiGIR Service - via The Interim Register of Marine and Nonmarine Genera

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

as per family - via The Interim Register of Marine and Nonmarine Genera

Amer. J. Sci., (5) 11 - 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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