... that with a 150-millimetre (5.9 in) wingspan, Sinomeganeura is small for the griffenfly family Meganeuridae, known for species with spans over 700 mm (28 in)?
... that Petrolisthes eriomerus, when trying to escape from a predator, can cast off limbs as a diversion, with the claws of a cast limb still gripping vigorously after separation?