Starfish first appeared in the fossil record in the Cambrian. The first known asterozoans were the Somasteroidea, which exhibit characteristics of both groups. Starfish are infrequently found as fossils, possibly because their hard skeletal components separate as the animal decays. Despite this, there are a few places where accumulations of complete skeletal structures occur, fossilized in place in Lagerstätten — so-called "starfish beds". By the late Paleozoic, the crinoids and blastoids were the predominant echinoderms, and some limestones from this period are made almost entirely from fragments from these groups. In the two major extinction events that occurred during the late
Animal Welfare Act 2006 nutrition and veterinary care. It outlaws tail docking of dogs for cosmetic reasons, with an exemption for "working" dogs, such as those used by the police, the armed forces or as service dogs. The corresponding Act for Scotland is the Animal Health and Welfare (Scotland) Act 2006. The Act is divided into several topics. Section 1 defines an "animal" as a vertebrate (other than a human) from the sub-phylum vertebrata of the phylum chordata. A "protected" animal is defined in s2 as one that is either commonly domesticated or one that is, at the time being, under the control of