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Echioceras natrix
Taxonomy
Ammonites natrix was named by von Schlotheim (1820).
It was recombined as Echioceras natrix by Jaworski (1931), Frebold (1970).
It was recombined as Echioceras natrix by Jaworski (1931), Frebold (1970).
Sister species lacking formal opinion data