निम्नलिखित में से कौन सा जीव समूह क्रेटेशियस-पैलियोजीन (K-Pg) द्रव्यमान विलुप्ति घटना के दौरान गैर-एवियन डायनासोर के साथ विलुप्त हो गया था?

Which of the following describes the major impact of the Triassic-Jurassic mass extinction event (approx. 201 million years ago)?

During the Permian-Triassic mass extinction event approximately 252 million years ago, which of the following organisms became extinct?