What consistent fossil evidence defines the dramatic method of consumption utilized by Xiphactinus?
Answer
Xiphactinus swallowed its prey whole
The defining characteristic of Xiphactinus's hunting style, consistently supported by fossil evidence found in stomach cavities, was that it swallowed its prey entirely intact. This contrasts sharply with feeding methods that involve tearing or dismembering food into smaller chunks before ingestion. This adaptation required a highly specialized oral structure capable of achieving a maximum gape, facilitating what is described as a 'one-gulp kill.'

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