Okay, “penis worm” is underselling it. In fact, the Grand Canyon was something of a treasure trove of well-preserved fossils, with the team uncovering more than 1,500 Cambrian-era worms, crustaceans, ...

A new study suggests spiders may have ancient marine origins. Researchers analyzed a 500-million-year-old fossil, Mollisonia ...

Freshly deposited eggs which are collected from cultured worms are unsegmented and unfertilized and two nuclei-like areas are clearly evident within the cytoplasm which have been described to be male ...

As the monsoon rains persist in Mumbai, doctors have issued a health advisory over a spike in tapeworm infections, ...

University of Arizona researchers reviewed an "exquisitely preserved" fossil of Mollisonia symmetrica that supports the idea that spiders swam before adapting to life on land.

A fossilized brain from a 500-million-year-old sea creature shows unexpected spider-like features, hinting that spiders and ...

University of Arizona researchers reviewed an "exquisitely preserved" fossil of Mollisonia symmetrica that supports the idea that spiders swam before adapting to life on land.

Half a billion years ago, a strange sea-dwelling creature called Mollisonia symmetrica may have paved the way for modern ...