Exquisitely preserved fossils in Morocco suggest that some of the earliest arthropods were nearly 7 feet (2 meters) long — gigantic in comparison with the shrimps, insects and spiders that are descendants of these early invertebrates, according to a new study.
Researchers made the discovery while exploring the site, known as Taichoute, which is part of the Fezouata Shale, a swath of fossil deposits dating to the Lower Ordovician period (485 million to 470 million years ago) that was discovered in 2017. Now part of the Moroccan desert, Taichoute was completely undersea millions of years ago.
Prior to the exploration of Taichoute, the closest Moroccan fossil sites were near Zagora, a town 50 miles (80 kilometers) away, where giant arthropods make up roughly 1% to 2% of the total fossil material. At Taichoute, nearly half of the fossils are of these jumbo creatures, according to the study.
