Another extraordinary specimen from the wonderful Oxford University Museum of Natural History: the skeleton of a goliath frog Conraua goliath , the largest extant anuran, which comfortably exceeds 30 cm and 3 kg in life: As noted by sometime SV-POW!sketeer Darren Naish over on Tetrapod Zoology , frogs have stupidly weird skeletons — surely the most derived of any tetrapod, despite their lowly, early diverging “amphibian”