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Leptosomiformes

Description

The cuckoo roller or courol (Leptosomus discolor) is the only bird in the family Leptosomidae, which was previously often placed in the order Coraciiformes but is now placed in its own order Leptosomiformes. Its nearest relative is not clear. Morphological evidence may suggest a placement in or near to Falconiformes. In the rather comprehensive DNA study by Hackett et al, this and the hoatzin are the only two birds whose position is unclear, although the cuckoo roller seems to be at the root of a group that contains the Trogoniformes, Bucerotiformes, Piciformes, and Coraciiformes.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)8454707https://www.gbif.org/species/8454707
PaleoBioDB ID (PBDB)368332https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=368332
Rankorder
Taxonomy (GBIF,PBDB)Life : Animalia : Chordata : Aves : Leptosomiformes
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
phylumChordataHaeckel 1847
subphylumVertebrataLamarck 1801
superclassGnathostomataGegenbauer 1874
-Osteichthyes
-SarcopterygiiRomer 1955
subclassDipnotetrapodomorpha
subclassTetrapodomorpha
-Tetrapoda
-ReptiliomorphaSäve-Söderbergh 1934
-AnthracosauriaSäve-Söderbergh 1934
-Batrachosauria
-Cotylosauria
-AmniotaHaeckel 1866
-SauropsidaHuxley 1864
classReptiliaLaurenti 1768
subclassEureptilia
-RomeriidaGauthier et al. 1988
-Diapsida
-Eosuchia
-NeodiapsidaBenton 1985
-SauriaGauthier 1984
-Archosauromorpha
-CrocopodaEzcurra 2016
-ArchosauriformesGauthier 1986
-EucrocopodaEzcurra 2016
-Archosauria
informalAvemetatarsaliaBenton 1999
-OrnithodiraGauthier 1986
-DinosauromorphaBenton 1985
-DinosauriformesNovas 1992
-Dinosauria
-Saurischia
-Theropoda
-NeotheropodaBakker 1986
-AverostraPaul 2002
-TetanuraeGauthier 1986
orderAvetheropodaPaul 1988
suborderCoelurosauriaHuene 1914
-ManiraptoraGauthier 1986
-ParavesSereno 1997
classAvesLinnaeus 1758
-PygostyliaChiappe 2002
-OrnithothoracesChiappe and Calvo 1994
-OrnithuromorphaChiappe et al. 1999
subclassOrnithuraeHaeckel 1866
subclassNeornithesGadow 1893
orderLeptosomiformesSharpe 1891
Scientific NameLeptosomiformes
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Leptosomiformesorderbelongs to Avesstated without evidencedel Hoyo et al., 2014
Leptosomiformesorderbelongs to Neornithesstated with evidenceClements et al., 2017
Status (PBDB)extant
Taxon Size (PBDB)4
Extant Size (PBDB)4 (100%)
First Recorded Appearance58.7 - 55.8 Ma
Paleogene
Environmentterrestrial (based on Theropoda)
Motilityactively mobile (based on Theropoda)
Dietcarnivore (based on Coelurosauria)
Reproductionoviparous, dispersal=direct/internal,mobile (based on Theropoda)
Ontogenyaccretion,modification of parts (based on Theropoda)
Taphonomyhydroxylapatite,compact or dense (based on Theropoda)
Primary Reference (PBDB)J. F. Clements, T. S. Schulenberg, and M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017
Wikipediahttps://en.wikipedia.org/wiki/Leptosomiformes

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Leptosomidae
family
accepted (GBIF)
listed (PBDB)
30.13 Ma
Pleistocene
0 Ma
Extant

Synonymy List

YearName and Author
1891Leptosomiformes Sharpe
2014Leptosomiformes del Hoyo et al.
2017Leptosomiformes Clements et al.

References

Clements J. F., Schulenberg T. S., et al (2017) , The eBird/Clements checklist of birds of the world: v2017
del Hoyo J., Collar N. J., et al (2014) HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines, 1-904
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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