Sleep problems in children with Sanfilippo syndrome.

Sanfilippo syndrome is a rare degenerative disorder which has severe intellectual and behavioural sequelae, commonly including sleep problems. A parental questionnaire was used to gather information on the sleep patterns of 80 children with Sanfilippo syndrome (mean age 10 years 2 months). The majority were found to have sleep problems (78%). Many also exhibited other distressing and unusual night time behaviours (staying up all night, chewing the bedclothes or crying out suddenly), and a few laughed or sang. Such problems may have been more severe in those with Sanfilippo syndrome type B. In four of the families offered individually tailored behaviour-management advice there was immediate improvement, which was maintained at followup in two cases. These results demonstrate the usefulness of even such a minimal intervention, even in a very difficult population such as this.

"Hominoid clavicle" from Sahabi is actually a fragment of cetacean rib.

A late Miocene/early Pliocene mammalian fossil from the site of Sahabi, Libya, was identified in previous publications as a clavicle belonging to the superfamily Hominoidea. After studying both a cast of the specimen and previously published descriptions and photographs we have concluded that the fossil is not a clavicle, but a rib fragment. In addition, our study demonstrates beyond reasonable doubt that this rib belongs not to a primate, but to a marine mammal. Following comparisons with 19 species in 14 genera of marine mammals, as well as six hominoid and three cercopithecoid species, both modern and fossil, we conclude that the specimen is best attributed to the Odontoceti, the cetacean suborder containing dolphins and porpoises. The rib indicates an animal in the size range of Recent Tursiops or Lagenorhynchus.