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Hadrosaurs occasionally ate crustaceans within rotting wood
Topic Started: Sep 22 2017, 11:02 AM (723 Views)
Rodlox
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JohnFaa
Sep 26 2017, 02:03 PM
Unlike birds, though, hadrosaurs were not selective eaters. They have broad jaws filled with tooth batteries for a reason...
species-wise, some were narrower-jawed than others,
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Yiqi15
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Any word on the exact species of the hadrosaur?
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LittleLazyLass
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No, like I said, we're not even sure if was from a hadrosaur, nevermind what kind. Additionally, samples were collected from two different formations.
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Archeoraptor
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do we know what type of crustaceans were? just curious
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Yiqi15
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Archeoraptor
Sep 28 2017, 05:06 AM
do we know what type of crustaceans were? just curious
The article says its crab.

Quote:
 
Although the identity of the crustaceans in the coprolites is unknown, fossil crab claws have been recovered from the middle Campanian Wahweap Formation35 and its lateral equivalent, the Masuk Formation in eastern Utah36.
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LittleLazyLass
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The paper answers this question too:
Quote:
 
Identification of the particular type of crustacean in the coprolites will require recovery of more diagnostic material. However, the large and thick pieces of cuticle, plus the presence of the 4 mm thick appendage suggest that these crustaceans were sizeable. Based on the presence of a 2 × 3 cm fragment of cuticle in one of the coprolites, we conservatively infer that a minimum dimension of the crustaceans was approximately 5 cm (with 2 cm added to account for the spread of paired appendages plus the missing carapace or tergite rims). Although the identity of the crustaceans in the coprolites is unknown, fossil crab claws have been recovered from the middle Campanian Wahweap Formation35 and its lateral equivalent, the Masuk Formation in eastern Utah36. These units are slightly older than the Kaiparowits Formation. Features of the crab fossils from the Masuk Formation are shown in Fig. 3.
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