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Hoazinoides Temporal range: Mid Miocene (Laventan) ~13.8–11.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Opisthocomiformes
Family:	Opisthocomidae
Genus:	†Hoazinoides A. H. Miller, 1953
Species:	†H. magdalenae
Binomial name
†Hoazinoides magdalenae Miller, 1953

Hoazinoides is an extinct genus of birds from the Middle Miocene (Laventan) from the "Monkey Beds" of the Villavieja Formation of the Honda Group at the Konzentrat-Lagerstätte of La Venta, Colombia.

Description

It is a member of the family Opisthocomidae, which also includes the hoatzin and several other extinct genera. The only known species is Hoazinoides magdalenae. Its generic epithet refers to its resemblance to modern hoatzin, and its specific name refers to its discovery near the Magdalena River basin. Like many other fossil birds, it is known from fragmentary remains, including the back portion of the skull, the specimen UCMP 42823 and other bones of the extremities. From these remains it appears that this bird was similar to that of hoatzin, although smaller, and distinguished from it in the parietal wall of the skull is concave and the coracoid and sternum were not fused. This is why Tab Rasmussen (1997) erected a new family, Hoazinoididae, for it. Its feet were like those of modern owls, in which the fourth toe can rotate backwards. Additionally, the remains of its distal ulna and carpal-metacarpal suggest that its arms were similar to those of hoatzins.

References

1. ^ Miller, Alden H. (1953). "A fossil Hoatzin from the Miocene of Colombia" (PDF). Auk. 70 (4): 484–495. doi:10.2307/4081360. JSTOR 4081360.
2. ^ Rasmussen, Tab, (1997). "Birds". In: R.F. Kay; R.H. Madden; R.L. Cifelli & J.J. Flynn (eds.) Vertebrate paleontology in the neotropics – the Miocene fauna of La Venta, Colombia. Smithsonian Institution Press, ISBN 156098418X.

External links

• Paleobiology Database: Hoazinoides

v t e Paleontology in Colombia
Notable researchers	After 1900 Etayo Hammen Hettner Hoffstetter Páramo 19th century Cuvier Humboldt
Major fossiliferous stratigraphic units	Pleistocene Sabana Fm. Tibitó Soatá Fm. Neogene Barzalosa Fm. Castilletes Fm. Honda Group La Venta Jimol Fm. Uitpa Fm. Ware Fm. Paleogene Bogotá Fm. Cerrejón Fm. Cerrejón Cretaceous La Frontera Fm. Hiló Fm. Hondita Fm. Oliní Gp. Paja Fm. Jurassic Arcabuco Fm. Valle Alto Fm. Devonian Cuche Fm. Floresta Fm.
Notable fossils	Pleistocene Gomphotheres Megatherium Honda Gp. Anachlysictis Aramus paludigrus Balanerodus Boreostemma Cebupithecia Colombophis Dracaena colombiana Dukecynus Eunectes stirtoni Galbula hylochoreutes Granastrapotherium Gryposuchus Hilarcotherium Hoazinoides Hondadelphys Huilatherium Lagonimico Langstonia Lycopsis Micodon Miocallicebus Miocochilius Mohanamico Mourasuchus Neotamandua Nuciruptor Patasola Potamosiren Purussaurus Saimiri annectens Saimiri fieldsi Stirtonia Xenastrapotherium Gualanday Gp. Colombitherium Bogotá Fm. Etayoa Cerrejón Fm. Acherontisuchus Anthracosuchus Carbonemys Cerrejonemys Cerrejonisuchus Montrichardia aquatica Puentemys Titanoboa Oliní Gp. Eonatator Hondita Fm. Pachyrhizodus etayoi Yaguarasaurus Hiló Fm. Ammonites Paja Fm. Acostasaurus Callawayasaurus Desmatochelys Kronosaurus Leivanectes Leyvachelys Muiscasaurus Padillasaurus Platypterygius Sachicasaurus Stenorhynchosaurus Arcabuco Fm. Dinosaur tracks Valle Alto Fm. Flora Cuche Fm. Antarctilamna Asterolepis Bothriolepis Holoptychius Pterygotus Strepsodus Floresta Fm. Trilobites
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• Prehistoric bird genera
• Miocene birds of South America
• Laventan
• Neogene Colombia
• Fossils of Colombia
• Honda Group, Colombia
• Fossil taxa described in 1953
• Prehistoric bird stubs
• Bird stubs