Pennaceous feather Pennaceous feather The pennaceous feather is a type of feather present in most modern birds and in some other species of maniraptoriform dinosaurs. A pennaceous feather has a stalk or quill. Its basal part, called a "calamus", is embedded in the skin. The calamus is hollow and has pith formed from the dry remains of the feather pulp, and the calamus opens below by an "inferior umbilicus" and above by a "superior umbilicus". The stalk above the calamus is a solid "rachis" having an umbilical groove on its underside. Pennaceous feathers have a rachis with "vanes" or "vaxillum " spreading
The Barbs Drive? and were to release their album "Black and Blue" in 2011. The Barbs The Barbs was a band from Medway, Kent with a non-English member Amy who is from outback NSW Australia. With indie rock and punk-pop influences, the band were never particularly successful in their home country, but in the Philippines in late 2004, they had a hit with the single "Massive Crush". The UK release of the same record was Single of the Week on Lauren Laverne's XFM show, and was surprisingly played on BBC Radio 2 several times. The single received critical acclaim, with 4 Ks