The discovery of a better preserved species of Matthewichnus (.Matthewichnus caudifer) by Kohl and Bryan (1994) allowed the assignment of these traces to temnospondyls based on the diagnostic tetradactyl manus (Haubold et al.
The tetradactyl manus and pentadactyl pes of the Lepreau Falls trackways conform to interpretations by Haubold et al.
The trackways were previously attributed to reptiles, but based on the tetradactyl manus, we interpret them as having been produced by temnospondyl amphibians with a total body length of at least 113.48 mm and 114.21 mm respectively.
a pentadactyl pes and tetradactyl manus; pes digits that increase in length from I to IV, with digit V subequal in length to digit II; relatively thick pes and manus digits with blunt/rounded distal tips; broad and rounded sole imprints; manus just in front of pes; manus digits I-III obliquely set (turned) toward the trackway midline; and manus digits that increase in length from I to III, with digit IV subequal in length to digit II (cf.
EMENDED DIAGNOSIS: Quadrupedal tetrapod tracks consisting of a pentadactyl pes and a tetradactyl manus; pes digits increase in length from I-IV, with digit V subequal in length to digit II; commonly with relatively thick manus and pes digits with blunt to rounded distal tips, but may be short and slender; broad rounded sole imprints; manus just in front of pes; manus digits I-III obliquely set toward the trackway midline; and manus digits that increase in length from I-III, with digit IV subequal in length to digit II (Modified from Lucas and Dalman 2013).
The manus is tetradactyl with regularly spaced digits.
The track on the right is smaller, tetradactyl, and slightly longer than wide.
The larger track, on the left, is pentadactyl and is nearly twice the length of the tetradactyl track.
The smaller, tetradactyl track is inferred to be that of the manus, whereas the larger pentadactyl track is that of the pes.