Basic measurements of Notharctus distal phalanges.

Measurements from Notharctus tenebrosus pedal distal phalanges held at the American Museum of Natural History. TPL, BH, BW, VFL, and SW-3/4 are in millimeters; FSA is in degrees; and VFL/TPL, (SH-1/4)/(SH-3/4), and (SW-3/4)/TPL are dimensionless indices. See Materials and Methods for details on measurements.aAll specimen numbers are from AMNH.bMeasurements: TPL, total proximodistal length of phalanx; BH, dorsovolar height of phalanx base; BW, mediolateral width of phalanx base; FSA, angle between plane of proximal articular facet and proximodistal axis of shaft; SH¼, dorsovolar height of shaft measured at a distance of ¼ of the total shaft length from the proximal end; SH¾, dorsovolar height of shaft measured at a distance of ¾ of the total shaft length from the proximal end; SW¾, mediolateral width of shaft at ¾ TPL length as measured from the proximal end; VFL, Proximodistal distance between proximal end and distal-most extent of volar process.