Timorebestia koprii is an extinct species of stem-group chaetognath that lived about 520 million years ago, in the Cambrian. Its fossils are known from the Sirius Passet Lagerstätte in Greenland, and it was first described in 2024. From Wikipedia
The Timorebestia, which lived over 500 million years ago, were among the largest swimming animals of their time and could provide insights into early animal ecosystems.
