Graptolite faunas and monaxonid demosponges of the Cyrtograptus lundgreni event (late Wenlock,Silurian) interval from the Orange district,New South Wales

Muir, L.A. & Botting, J.P., December, 2007. Graptolite faunas and monaxonid demosponges of the Cyrtograptus lundgreni event (late Wenlock, Silurian) interval from the Orange district, New South Wales. Alcheringa 31, 375-395. ISSN 0311-5518.

Three monograptid and five retiolitid graptoloids, and one species of sponge, are described from late Wenlock sections (Cyr. lundgreni and Co. ludensis biozones) at Spring Creek and Wallace Creek, near Orange, New South Wales, Australia. The sponge Janussenia orangense gen. et sp. nov. is the first monaxonid demosponge to be described from the Australian Silurian. An object containing broken Testograptus testis, and interpreted as the faecal pellet of a predator or scavenger on graptoloids, is described.

Lucy A. Muir [l.muir@nhm.ac.uk], Department of Palaeontology, Natural History Museum, Cromwell Road, London SW7 5BD, UK. Joseph P. Botting [joe@asoldasthehills.org], 2C Roslyn Close, Mitcham CR4 3BB, UK. Received 28.4.2006; Revised 10.10.2006.