The new macro function %SYSFUNC (SASÂ® rel 6.12) allows access by the macro processor to most data step. functions and several SCL functions. Solutions to many. common macro tasks can now be simpler and more. efficient. In addition, many of the SCL functions allow the. programmer to manipulate external files directly from the.
Lancelet. Branchiostoma lanceolatum, or Amphioxus lan-ceolatus) , a chordate animal of subphylum Acrania (Cephalo-chordata). The body of the lancelet is transparent, up to 8 cm long, and pointed at both ends.The notochord extends into the anterior end of the body.The caudal fin is lancet-shaped.ranchiostoma lanceolatum, or Amphioxus lan-ceolatus) , a chordate animal of subphylum Acrania (Cephalo-chordata). The body of the lancelet is transparent, up to 8 cm long, and pointed at both ends. The notochord extends into the anterior end of the body. The caudal fin is lancet-shaped.
Amphiuma pholeter has one digit on each foot, Amphiuma means has two, and Amphiuma tridactylum has three. In other respects, the species are similar, although there is a significant size difference between A. pholeter and the other two species at maturity.here are no recorded conspicuous external sexual differences. Amphiuma means. Amphiuma tridactylum, the three-toed amphiuma, is the second largest of the three species reaching a maximum size of 106 cm (41.7 inches) in total length. The laterally compressed tail can compose up to 25% of the total body length.