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.
The class Amphibia is composed of only 3 orders. Anura, which refers to tailless amphibians, includes frogs and toads (see Table: Similarities and Differences Between Frogs and Toads). This is the largest order with more than 3,500 species. Caudata refers to amphibians with tailsâsalamanders, newts, and sirensâand has about 375 species (see Table: Some Common Salamanders and Newts). The Gymnophiona order is made up of caecilians, legless, tailless amphibians that spend most of their time burrowing. It has about 160 species.