PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Opisthocomidae

Reptilia - Opisthocomiformes - Opisthocomidae

Taxonomy

Opisthocomidae was named by Swainson (1837). It is extant.

It was assigned to Cuculiformes by Carroll (1988); and to Opisthocomiformes by Livezey and Zusi (2007), Mayr et al. (2011), Mayr and De Pietri (2014) and del Hoyo et al. (2014).

Subtaxa

Hoazinavis, Hoazinoides, Namibiavis, Opisthocomus, Protoazin

Synonymy list

Year	Name and author
1837	Opisthocomidae Swainson
1988	Opisthocomidae Carroll
2007	Opisthocomidae Livezey and Zusi p. 93
2011	Opisthocomidae Mayr et al.
2014	Opisthocomidae Mayr and De Pietri
2014	Opisthocomidae del Hoyo et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda

Rank	Name	Author
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Theropoda	()
—	Neotheropoda
—	Averostra	Paul 2002
—	Tetanurae
—	Coelurosauria	()
—	Maniraptora
—	Paraves
class	Aves
subclass	Neornithes	Gadow 1893
—	Neognathae	(Pycraft 1900)
—	Neoaves	Sibley et al. 1988
—	Terrestrornithes
—	Dendrornithes
—	Anomalogonates	Garrod 1874
—	Coccyges	Huxley 1867
superorder	Cuculimorphae	Sibley et al. 1988
order	Opisthocomiformes	L'Herminier 1837
family	Opisthocomidae	Swainson 1837
family	Opisthocomidae	Swainson 1837

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Fm. Opisthocomidae Swainson 1837

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G. †Hoazinavis Mayr et al. 2011

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†Hoazinavis lacustris Mayr et al. 2011

G. †Hoazinoides Miller 1953

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†Hoazinoides magdalenae Miller 1953

G. †Namibiavis Mourer-Chauviré 2003

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†Namibiavis senutae Mourer-Chauviré 2003

G. Opisthocomus Illiger 1811

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Opisthocomus hoazin Muller 1776 [hoatzin]

G. †Protoazin Mayr and De Pietri 2014

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†Protoazin parisiensis Mayr and De Pietri 2014

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

hydroxyapatiteo

Entire body:

yeso

Adult length:

10 to < 100o

Adult width:

1.0 to < 10o

Adult height:

1.0 to < 10o

Architecture:

compact or denseo

Ontogeny:

accretion, modification of partso

Grouping:

solitaryo

Environment:

terrestrialf

Locomotion:

actively mobileo

Life habit:

volantf

Diet:

folivoref

Reproduction:

oviparouso

Dispersal:

direct/internalo

Dispersal 2:

mobileo

Created:

2009-01-03 17:10:47

Modified:

2009-01-03 19:10:47

Source: f = family, o = order

References: Marsh 1875, Terborgh et al. 1990

Age range

Maximum range based only on fossils: base of the Priabonian to the top of the Middle Miocene or 38.00000 to 11.60800 Ma
Minimum age of oldest fossil (stem group age): 33.9 Ma

Collections (4 total)

Time interval	Ma	Country or state	Original ID and collection number
Priabonian	38.0 - 33.9	France (Ile-de-France)	Protoazin parisiensis (209402)
Deseadan	29.0 - 21.0	Brazil (Sao Paolo)	Hoazinavis lacustris (206869)
Middle Miocene	15.97 - 11.608	Colombia (Huila)	Hoazinoides magdalenae (85201)
Laventan - Mayoan	13.8 - 10.0	Colombia	Hoazinoides magdalenae (13741)