dinochecker
Welcome to our ALVAREZSAURUS entry...
Archived dinosaurs: 787
fbtwitg+feed
Dinosaurs from A to Z
Click a letter to view...
A B C D E F G
H I J K L M N
O P Q R S T U
V W X Y Z ?

ALVAREZSAURUS

a carnivorous alvarezsaurid theropod dinosaur from the Late Cretaceous of Argentina.
alvarezsaurus
Pronunciation: AHL-vahr-ez-SOR-us
Meaning: Alvarez' lizard
Author/s: Bonaparte (1991)
Synonyms: None known
First Discovery: Neuquén, Argentina
Chart Position: 284

Alvarezsaurus calvoi

The line between land-dwelling dinosaurs and the flightless branch of our feathered friends is a bit hazy at the best of times and it became no clearer with the discovery of Alvarezsaurus—a small carnivorous dinosaur that José Fernando Bonaparte initially described as a "strange flightless bird" in 1991.
(Alvarez' lizard) Etymology
Alvarezsaurus is derived from "Alvarez" (in honor of well reknowned historian Don Gregorio Alvarez) and the Greek "sauros" (lizard). The species epithet, calvoi, honors Argentine geologist and paleontologist Jorge Orlando Calvo.
Discovery
The remains of Alvarezsaurus were discovered at "Boca del Sapo" in the Bajo de la Carpa Formation (formerly the Bajo de la carpa member) of the Rio Colorado Subgroup (formerly the Rio Colorado Formation) of the Neuquén Group, Neuquén, Argentina.
The Holotype (MUCPv 54) is a partial skeleton, lacking a skull and forelimbs.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Santonian
Age range: 86-84 mya
Stats:
Est. max. length: 1.4 meters
Est. max. hip height: 0.5 meters
Est. max. weight: 14 Kg
Diet: Carnivore
References
• J.F. Bonaparte (1991) "Los vertebrados fósiles de la Formación Rio Colorado, de la Ciudad de Neuquén y Cercanías, Cretácico Superior, Argentina" (The vertebrate fossils of the Rio Colorado Formation, from the city of Neuquén and surrounding areas, Upper Cretaceous, Argentina).
• L.M. Chiappe, M.A. Norell, J.M. Clark (2002) "The Cretaceous short-armed Alvarezsauridae. Mononykus and its kin" in "Mesozoic Birds: Above the Heads of Dinosaurs". /uk.
Email    Facebook    Twitter    Google+    Stumbleupon    Reddit    Pinterest    Delicious
Time stands still for no man, and research is ongoing. If you spot an error, or want to expand, edit or add a dinosaur, please use this form. Go here to contribute to our FAQ.
All dinos are GM free, and no herbivores were eaten during site construction!
To cite this page:
Atkinson, L. "ALVAREZSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 29th Mar 2017.
  top