Alvarezsaurus
Alvarezsaurus was a tiny, fast-running dinosaur that lived in Argentina about 86 to 83 million years ago. It had a long tail and probably used its sharp claws to dig for insects. Scientists think it was one of the earliest members of a weird group of dinosaurs with strong, short arms.13
Cando viviu?
Como era de grande?
Canto medía de longo?
Canto medía de alto?
estimación
Canto pesaba?
tan longo coma 3 gatos domésticos do fociño á cola🍌tan longo coma 8 plátanos postos un tras outro
máis ou menos tan pesado coma un gato doméstico🍌tan pesado coma 25 plátanos🏃podería correr 100 metros en 12 segundos (o humano máis rápido necesita 9,6)Como era de grande Alvarezsaurus comparado CONTIGO?
Só son contas no teu navegador. Non se garda nin se envía nada.
Que velocidade alcanzaba?
Datos curiosos
Alvarezsaurus was named after Don Gregorio Alvarez, an Argentine historian, not after a dinosaur scientist.1
Its third toe bone (metatarsal III) was the longest, and its fourth toe bone was unusually long too.1
Unlike many of its later relatives, Alvarezsaurus did not have its ankle bones (astragalus and calcaneum) fused together.1
The shoulder blade of Alvarezsaurus was curved and smaller than that of later alvarezsaurids like Mononykus.1
Its tail vertebrae had sharp undersides and triangular side projections, a feature shared with other alvarezsaurids.1
Alvarezsaurus is considered a basal (early) member of the alvarezsaurid family, which includes dinosaurs with strong, short arms and big claws.1

As preguntas máis frecuentes sobre Alvarezsaurus
?How big was Alvarezsaurus?
Alvarezsaurus was small, about 1 to 1.4 metres (3.3 to 4.6 feet) long and weighed around 3 kilograms (6.6 pounds).1
?What did Alvarezsaurus eat?
It may have eaten insects. Its sharp claws and strong arms suggest it dug into termite or ant nests, though scientists are not completely sure.12
?Could Alvarezsaurus run fast?
Yes, its leg structure suggests it was a fast runner. It had long legs and a long tail for balance.12
?Did Alvarezsaurus have feathers?
No direct feather fossils are known for Alvarezsaurus, but a close relative, Shuvuuia, had downy, feather-like coverings, so it likely had feathers too.2
?When did Alvarezsaurus live?
It lived during the Late Cretaceous, about 86 to 83 million years ago, in what is now Argentina.1
?Was Alvarezsaurus a dinosaur?
Yes, Alvarezsaurus was a small theropod dinosaur, part of the alvarezsaurid family.1
Para expertos en dinos
- Nome científico
- Alvarezsaurus
- Bautizado por
- Bonaparte 19913
- Grupo
- Dinos emplumados curiosos
- Familia / clado
- Alvarezsauridae3
- Clasificación
- Theropoda > Alvarezsauridae3
- Idade das rochas
- de 86 a 84 millóns de anos (Santonian)3
- Formacións rochosas
- Bajo de la Carpa3
- Países
- Arxentina3
- Rexistros fósiles
- 1 na Paleobiology Database3
- Descubrimento
- Alvarezsaurus was named by Argentine paleontologist José Bonaparte in 1991. The first fossils were found in the Bajo de la Carpa Formation in Argentina.13
- Aínda en debate
- Scientists are not sure whether Alvarezsaurus was more closely related to birds or to other non‑bird dinosaurs. Some studies place it with early birds, but others keep it among the theropod dinosaurs.1
De onde veñen os datos
- Alvarezsaurus (en.wikipedia.org)
- Alvarezsauridae (en.wikipedia.org)
- Alvarezsaurus in The Paleobiology Database (CC BY 4.0): idade, lugares, formacións rochosas, clasificación.
Cada dato desta páxina ten un número que leva á súa fonte. Se nos equivocamos nalgo, sentímolo, somos fans dos dinos, non unha revista científica. Escríbenos a [email protected] e arranxámolo.
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