Discoveries of some species, such as this Pleurobranchaea britannica mollusc (left), are often seen as less enticing than others, such as the fossil dinosaur Spinosaurus mirabilis (artist’s impression, right).Credit: Turani, M. et al./Zoosyst. Evol. CC BY 4.0, JA Chirinos/SPL In February, a study in Science1 described a new species of Spinosaurus — a group of