an organism that has remained similar to its ancestors over long evolutionary periods

एक जीव जो लंबे समय तक अपने पूर्वजों के समान बना रहता है

English Usage: The coelacanth is often referred to as a living fossil due to its ancient lineage.

Hindi Usage: कोएलाकैंथ को अक्सर एक जीवित जीवाश्म कहा जाता है क्योंकि इसकी प्राचीन वंशावली है।