#guans

Rusty-margined Guan Penelope superciliaris

8/2/2024 São Paulo, Brazil

Photo: Brendan Ryan

"Large, long-tailed game bird restricted to undisturbed humid evergreen forest on a few high mountains in Guatemala and adjacent southern Chiapas, Mexico; very rare and local. Mainly found singly in forest canopy, where can be easily overlooked. Unmistakable: black and white overall with red horn on top of head and piercing whitish eyes."

By Ripley Cook on @iguanodont

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Name: Boreortalis laesslei 

Status: Extinct

First Described: 1954

Described By: Brodkorb 

Classification: Dinosauria, Saurischia, Eusaurischia, Theropoda, Neotheropoda, Averostra, Tetanurae, Orionides, Avetheropoda, Coelurosauria, Tyrannoraptora, Maniraptoriformes, Maniraptora, Pennaraptora, Paraves, Eumaniraptora, Averaptora, Avialae, Euavialae, Avebrevicauda, Pygostylia, Ornithothoraces, Euornithes, Ornithuromorpha, Ornithurae, Neornithes, Neognathae, Galloanserae, Pangalliformes, Galliformes, Cracidae 

Boreortalis is our first probable Cracid! The Cracids are a group of distinctive chickeny dinosaurs such as the Currasow, Guans, and Chachalacas. Boreortalis is the oldest definite record of these dinosaurs, known from the Alachua Formation of Florida, as well as the Snake Creek Formation of Nebraska. As such, it lived from about 20.5 until 12 million years ago, from the Aquitanian until the Serravallian ages of the Miocene of the Neogene. It seems to be the most similar to the Chachalacas, a group of chickeny birds known from the southern United States, Mexico, and Central and South America. As it is known from fairly limited material, very little more can be said about it. 

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Sources: 

https://en.wikipedia.org/wiki/Cracidae 

http://fossilworks.org/bridge.pl?a=collectionSearch&taxon_no=39332&max_interval=Miocene&country=United%20States&state=Nebraska&is_real_user=1&basic=yes&type=view&match_subgenera=1 

http://fossilworks.org/bridge.pl?a=collectionSearch&taxon_no=39332&max_interval=Miocene&country=United%20States&state=Florida&is_real_user=1&basic=yes&type=view&match_subgenera=1 

http://fossilworks.org/bridge.pl?a=taxonInfo&taxon_no=39332 

Photo: William Stephens

"Large, turkey-like bird found only in the forests of northern Trinidad. It is black with white patches on the wings and crown, a light blue face, and an azure dewlap (flap of bare skin) that dangles from its throat. It is usually seen high in the trees, but on rare occasions can descend to the ground. Locally known as 'pawi', this impressive bird is highly endangered due to hunting, and is regularly seen in only a few places, such as near the town of Grand Riviere."