Size of Extinct Animals

From millimetre-scale animals to giant dinosaurs, every animal on the stage has a reference measurement and an identified source. Scroll, use the arrow keys or swipe horizontally to travel from small to large. Find an animal directly, then compare it with another animal or a 1.7 m reference adult.

Only the marked dimension is calibrated. Length, height and wingspan describe different things; this is not a ranking by mass. The human height is an illustrative reference, not a population average.

The images reuse original atlas reconstructions with presentation masks around the subjects, without stretching their shapes. Perspective and posture remain illustrative; only the marked dimension is calibrated. Sources may describe an individual, a mounted skeleton, a range or a model estimate. Open an animal's details for its interpretation.

Every animal record is searchable. Records still needing a verified dimension, calibrated artwork or a specific representative taxon are clearly marked and stay outside the scale sequence.