Despite being the largest and most diverse group of animals on the planet, ecdysozoans have long posed a mystery for scientists due to the absence of clear fossil evidence of their early ancestors, ...

even though molecular studies suggested they existed during the Precambrian period. In a recent study published in Current Biology, researchers introduced Uncus dzaugisi, a 555-million-year-old ...

A 555-million-year-old fossil found in South Australia provides crucial evidence for the Precambrian origins of Ecdysozoa, which encompasses insects, crustaceans, and nematodes. The discovery of ...

This tiny fossil, barely over a few centimeters long, represents the oldest confirmed member of the Ecdysozoa and the only one known from the Precambrian period. “It’s an incredibly exciting discovery ...

Discover how a recent fossil study sheds light on the evolution of the ventral nerve cord in ecdysozoan animals and its ...

A study analyzing Cambrian fossils uncovered that the ancestral ecdysozoan likely had a single ventral nerve cord, ...

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If your period is light, it's usually due to natural period fluctuations. However, it can also happen with stress, weight changes, hormonal birth control, and some medical conditions. Lighter than ...

Late or missed menstrual period Late period: 5 or more days late compared to normal menstrual cycle Missed period: no menstrual flow for more than 6 weeks Teen not using any birth control that stops ...

An international team of scientists has uncovered a fascinating piece of the evolutionary puzzle: how the ventral nerve cord, a key component of the central nervous system, evolved in ecdysozoan ...