The fossil record rarely yields leeches. Their bodies are soft and fragile, built with almost nothing that fossilizes easily. So when one does appear, as with Macromyzon siluricus, it’s considered a lucky find pulled from the depths of time.
A…
The fossil record rarely yields leeches. Their bodies are soft and fragile, built with almost nothing that fossilizes easily. So when one does appear, as with Macromyzon siluricus, it’s considered a lucky find pulled from the depths of time.
A…