A core catcher for a coring tool may include a sleeve including a slit extending along at least a portion of a height of the sleeve. A crosspiece may extend at least partially across the at least one slit and at least partially around a perimeter of the sleeve. A track may extend at least partially around the perimeter of the sleeve, the crosspiece being slidably engaged with the track. The crosspiece and the track may be configured to cooperatively delimit relative movement of portions of the sleeve on opposite sides of the slit as a width of the slit increases or decreases responsive to receipt of a core sample into the core catcher.