taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
0452B556FFF8FD6E4D51E131FB0FFBCD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/3961002/files/figure.png	http://doi.org/10.5281/zenodo.3961002	FIGURE 1. IN A FREE-BODY DIAGRAM for a running tyrannosaur, the angles of the leg joints (top) are critical parameters. In addi- tion to the forces and torques produced by leg muscles, external forces (bottom) including the weights of the body (Ƒb), thigh (Ƒt), shank (Ƒs), and metatarsus (Ƒm), as well as the ground reaction force (GRF) that acts a distance R from the toe joint must be incorporated. (Adapted from ref. 6.)	FIGURE 1. IN A FREE-BODY DIAGRAM for a running tyrannosaur, the angles of the leg joints (top) are critical parameters. In addi- tion to the forces and torques produced by leg muscles, external forces (bottom) including the weights of the body (Ƒb), thigh (Ƒt), shank (Ƒs), and metatarsus (Ƒm), as well as the ground reaction force (GRF) that acts a distance R from the toe joint must be incorporated. (Adapted from ref. 6.)	2002-12-31	Richard Fitzgerald		Zenodo	biologists	Richard Fitzgerald			
0452B556FFF8FD6E4D51E131FB0FFBCD.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/3961004/files/figure.png	http://doi.org/10.5281/zenodo.3961004	FIGURE 2. ESTIMATED EXTENSOR MUSCLE MASS per leg needed to run fast, as a fraction of total body mass. Larger animals need relatively more leg muscle to run. This dependence is illustrated by the solid line, calculated for a chicken scaled up to the size of T. rex. For several models of T. rex anatomy, the estimates (red) all require more leg muscle for running fast than the creature was likely to have had (orange dot). (Adapted from ref. 6.)	FIGURE 2. ESTIMATED EXTENSOR MUSCLE MASS per leg needed to run fast, as a fraction of total body mass. Larger animals need relatively more leg muscle to run. This dependence is illustrated by the solid line, calculated for a chicken scaled up to the size of T. rex. For several models of T. rex anatomy, the estimates (red) all require more leg muscle for running fast than the creature was likely to have had (orange dot). (Adapted from ref. 6.)	2002-12-31	Richard Fitzgerald		Zenodo	biologists	Richard Fitzgerald			
