Pentremitidea Filosa Whiteaves from the Silica Formation in Northwestern Ohio

Author Institution: Bowling Green State University, Bowling Green, Ohi

Radiocarbon Date on Pleistocene Peccary Find in Sandusky County, Ohio

Author Institution: Bowling Green State Universit

Lobarochiton, New Generic Designation for Gryphochiton? Anomalus (Rowley) (Polyplacophora)

Author Institution: Department of Geology, Bowling Green State UniversityA new generic designation Lobarochiton is proposed for the Lower Mississippian taxon originally described by Rowley (1908) from the Louisiana Limestone of Missouri as Platyceras (?) anomalum. Williams (1943) recognized the polyplacophoran affinities and questionably assigned the taxon to the genus Gryphochiton Gray. Subsequent study of the holotype, a tail valve, has shown the presence of primitive insertion plates and differences in valve shape and outline which distinguish it from other known genera of polyplacophorans. Lobarochiton is assigned to the Family Lepidopleuridae Pilsbry, 1892

James Hall’s (1856) Rostroconchs from the Mississippian of Indiana and Illinois

Author Institution: Dept of Geology, Bowling Green State University, Bowling Green, OHHall (1856) described without illustrations six species of the rostroconch Conocardium in his study of the fauna of the Salem Limestone in Indiana and the Warsaw Shale in Illinois. The species represent five genera, two of which are new, Leptoconocardium and Kyoconocardium. Other species represent the genera Hippocardia Brown, 1843; Oxyprora Hoare, Mapes, and Yancey, 2002; and Diedrorynchus Hoare and Peck, 2005

Bound States of the q-Deformed AdS5 x S5 Superstring S-matrix

The investigation of the q deformation of the S-matrix for excitations on the string world sheet in AdS5 x S5 is continued. We argue that due to the lack of Lorentz invariance the situation is more subtle than in a relativistic theory in that the nature of bound states depends on their momentum. At low enough momentum |p|<E the bound states transform in the anti-symmetric representation of the super-algebra symmetry and become the solitons of the Pohlmeyer reduced theory in the relativistic limit. At a critical momentum |p|=E they become marginally unstable, and at higher momenta the stable bound states are in the symmetric representation and become the familiar magnons in the string limit as q->1. This subtlety fixes a problem involving the consistency of crossing symmetry with the relativistic limit found in earlier work. With mirror kinematics, obtained after a double Wick rotation, the bound state structure is simpler and there are no marginally unstable bound states.Comment: 25 page