Vol. 27 No. 190 (2025): Primavera 2025

The cover

The genera Anomalocaris, Hallucigenia and Xianguangia belonged to the Cambrian period, when the first predators appeared in the fossil record. Anomalocaris had spiny appendages on its head with which it carried food to its mouth, which was shaped like a pineapple slice, and teeth to crush it. It could measure up to one meter. Hallucigenia was no more than a few centimeters long and had a long body with spines on the dorsal side and soft-tissue limbs on the ventral side. Xianguangia was a sessile organism. It had a cylindrical body with numerous feather-like tentacles around an oral disc, adapted for filter feeding.

Naia Salas Vega

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