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June 14, 2023Open Access

Taphonomic damage obfuscates interpretation of the retroarticular region of the Asteriornis mandible

Abi Crane Juan Benito Albert Chen Grace Musser Christopher R. Torres Julia A. Clarke Stephan Lautenschlager Daniel T. Ksepka Daniel J. Field

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Key Points

This research investigates the interpretation of the retroarticular region of the Asteriornis mandible using new anatomical insights.
Reinterpretation of the Asteriornis mandible based on fossil analysis.
Comparison with extant Galloanserae and early Palaeogene species.
Update of anatomical character matrix to reflect morphological traits.
Identified processes in Asteriornis were reinterpreted as not preserved.
Phylogenetic analyses support Asteriornis as a total-group galloanseran with potential robust processes.
Morphological traits provide insights into retroarticular processes among early crown birds.

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Implication

Study reinterprets jaw structure in Asteriornis, indicating new insights into early crown birds' anatomy.

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Cite This Study

Crane et al. (2023) studied this question.

synapsesocial.com/papers/6a77f6b2d2fa2470761f3807 https://doi.org/10.1101/2023.06.13.544555

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