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ALTIRHINUS

a herbivorous styracosternan iguanodont dinosaur from the Early Cretaceous of Mongolia.
altirhinus
Pronunciation: al-ti-RIEN-us
Meaning: High snout
Author/s: Norman (1998)
Synonyms: Iguanodon orientalis
First Discovery: Dornogov, Mongolia
Chart Position: 358

Altirhinus kurzanovi

(Kurzanov's high nose) Etymology
Altirhinus is derived from the Latin "altus" (high) and the Greek "rhin-(rhis)" (nose or snout) named "in recognition of the highly arched nasal bones of the skull which give the snout of this animal a distinctively elevated profile." The species epithet, kurzanovi (koor-zuh-NOH-vie), is named in honor of Dr. Sergei M. Kurzanov of the Paleontology Institute of the Russian Academy of Sciences, Moscow.
Discovery
The remains of Altirhinus were discovered in the Khuren Dukh Formation (previously part of the Shinekhudag/Shinehuduk Formation), 30km south of the town of Choir (Choyr), Dornogovi Province, Mongolia, by Kurzanov in 1981. The holotype (PIN 3386/8) includes a skull which is well preserved on the left side, plus bits of hands, feet, shoulders and hip.
Paratypes:
PIN 3386/7 (3387): A partial skull, upper and lower jaws, 10 teeth, fragmentary back and neck vertebrae, ribs, sternum, shoulder, arm and hand bones.
PIN 3386/9 (3389): Both shoulder girdles, a whole right arm and most of the left, both nearly complete hands, both pubes, left thigh, right shin, both shankbones, both ankles, foot and toe bones, and 34 tail vertebrae.
PIN 3390: Broken limb and girdle bones, chevron and jaw fragments, and an isolated tooth.
PIN 3391: A partial left foot, a shin, 4 partial vertebra and some bone fragments.
All remains were originally assigned to Iguanodon orientalis.
Estimations
Timeline:
Era: Mesozoic
Epoch: Early Cretaceous
Stage: Albian
Age range: 120-112 mya
Stats:
Est. max. length: 8 meters
Est. max. hip height: ?
Est. max. weight: 2 tons
Diet: Herbivore
References
• Rozhdestvensky AK (1952) "Discovery of iguanodonts in Mongolia".
• Norman DB (1980) "On the ornithischian dinosaur Iguanodon bernissartanis from Belgium". Mémoires de I'Institut Royal des Sciences Naturelles de Belgique 178: 1-105.
• Norman DB (1996) "On Mongolian ornithopods (Dinosauria: Ornithischia). 1. Iguanodon orientalis Rozhdestvensky, 1952". Zoological Journal of the Linnean Society, 116(3) : 303-315.
• Norman DB (1998) "On Asian ornithopods (Dinosauria: Ornithischia). 3. A new species of iguanodontid dinosaur". Zoological Journal of the Linnean Society.
• Norman DB (2004) "Basal Iguanodontia" in Weishampel, Dodson and Osmólska (eds.) "The Dinosauria: Second Edition".
• Godefroit P (2012) "Bernissart Dinosaurs and Early Cretaceous Terrestrial Ecosystems".
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To cite this page:
Atkinson, L. "ALTIRHINUS :: from DinoChecker's dinosaur archive".
›. Web access: 22nd Oct 2017.
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