Two new Cenozoic fossil species of Amphithyris (Brachiopoda) from North Otago, New Zealand

Key Points

• To identify and describe two new fossil species of Amphithyris from New Zealand's Alma Group strata.
• Described two new species based on fossil analysis.
• Collected samples from the Late Eocene to earliest Oligocene strata in North Otago.
• Examined morphological characteristics, including teeth and socket ridges.
• Identified two new species of Amphithyris, the first of their kind globally.
• One species exhibited unique teeth and socket ridges compared to other platidiids.