Assert that the specimen is (first option)

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From: The Osteology Lab

Description summary:
The title and description vary based on the current Proposed Taxon:

Proposed Taxon:TitleDescription
1 - DinosaursaurischianThe animal must have walked with a reptilian gait.
11 - Saurischiena sauropodThe bone seems on the stockier side.
12 - OrnithischianstegosaurianThe characteristic orientation of the bones must have come from a ground vegetation grazer.
111 - Sauropoda diplodocusOne of the largest Mesozoic beasts, characterized by its long tail.
112 - Theropodan allosaurusOne of the fiercest, largest hunters ever to live.
121 - Stegosauriana stegosaurusThe exact combination of size and structure is unmistakable.
122 - Ornithopodan iguanodonYou don't have its horn, but you're still certain.

[Find the rest of the story at]

Unlocked with Proposed Taxon: is: Dinosaur, Saurischian, Ornithischian, Sauropod, Theropod, Stegosaurian, Ornithopod, Bone under Examination: is: A Femur, Possibly Jurassic or The Forelimb of an Unidentified Beast

Challenge information

Narrow, Identifying... 5 (50% base)

  • 1 and below - almost impossible (10%)
  • 2 - high-risk (20%)
  • 3 - high-risk (30%)
  • 4 - tough (40%)
  • 5 - very chancy (50%)
  • 6 - chancy (60%)
  • 7 - modest (70%)
  • 8 - very modest (80%)
  • 9 - low-risk (90%)
  • 10 and above - straightforward (100%)



Description summary:
The description varies based on the new level of Proposed Taxon:

Proposed Taxon:Description
11 - SaurischianIt is, perhaps, a leap to infer the shape of the hips from a limb bone. But palaeontology is a science of careful inferences.
111 - SauropodYou are surely looking at one of the very largest beasts to ever walk the earth.
121 - StegosaurianThis bone must have come from mid-sized dinosaur with a quadruped stance.
1111 - DiplodocusDiplodocus is known for its long tail and even longer neck – a sort of walking bridge that waded the swamps of the Jurassic.
1121 - AllosaurusAllosaurus was a monstrous hunter of the Jurassic, a beast that could have devoured a buffalo in a single snap of its colossal jaws.
1211 - StegosaurusSpeculation abounds over the purpose of the plates on Stegosaurus' back. Perhaps your own specimen can help shed light on the matter.
1221 - IguanodonOne of the best-known dinosaurs, the anatomy of Iguanodon's horn has been a point of substantial contention among zoologists.

[Find the rest of the story at]


No, not quite

One of Gebrandt's assistants looks over your shoulder and points out a few mistakes in your work. They may or may not be correct, but they seem confident – you should seek out more data.