MEREDITH SMITH, Moya*; FRASER, gareth; King’s College London: The origin of vertebrate dentitions each of their own design It has been proposed that amongst Gnathostomata, in both stem and crown gnathostomes, several different strategies unique to each taxon have evolved to pattern the dentition. Variation occurs in the spatial-temporal pattern of tooth addition, either in […]

MITSIADIS, TA; FONTAINE-PERUS, J; CHERAUD, Y; KINGS COLLEGE LONDON, SE1 9RT LONDON, UK; CNRS U6018, NANTES UNIVERSITY, 44322 NANTES, FRANCE ; CNRS U6018, NANTES UNIVERSITY, 44322 NANTES, FRANCE: RECOVERY OF TEETH IN BIRDS Recent advances in molecular and developmental genetics have provided tools for understanding evolutionary changes in the nature of the epithelial-mesenchymal interactions regulating […]

PETERKOVA, R*; LESOT, H; PETERKA , M; Institute of Experimental Medicine Academy of Sciences, Prague, Czech Republic.; INSERM U595, Strasbourg, France; Institute of Experimental Medicine Academy of Sciences, Prague, Czech Republic: Phylogenetic memory of developing mammalian dentition During evolution, the origin of new structures was often accompanied by the suppression of old ones. Primordia of […]

HUYSSEUNE, A.*; WITTEN, P.E.; Ghent University, Belgium; University of Hamburg, Germany & Dalhousie University, Halifax, Canada: Patterning of development in continuously replacing osteichthyan dentitions The dentition of osteichthyans presents an astonishing diversity in regard to distribution of the dentition in the oral cavity, tooth numbers, tooth arrangements, tooth shapes and sizes. Taking examples from different […]

REISZ, R.R.; University of Torontoa at Mississauga: Origin of dental occlusion in tetrapods, signals for terrestrial vertebrate evolution Among terrestrial vertebrates, the general primitive dental condition is the presence of simple conical teeth arranged in a single row along the edges of the upper and lower jaw. The upper and lower teeth do not occlude […]

STREELMAN, Todd; Georgia Institute of Technology: Genetics and Development of the Cichlid Dentition A general goal of evolutionary biology is to understand how diversity is generated and maintained in natural populations, and yet this is something we know little about at the molecular level. This is an apposite description of the state of knowledge regarding […]

SANSOM, I. J.*; DONOGHUE, P. C. J.; University of Birmingham, UK; University of Bristol, UK: Evolution and development of the skeleton in the earliest vertebrates The origin of the vertebrate skeleton is a very simple matter: the most primitive living vertebrates entirely lack mineralised tissues while sharks manifest all of the skeletal systems of vertebrates […]

MOROZ, Leonid; University of Florida: “What is a Neuron from a Genomic Standpoint? Polyphyletic Origin and Natural System of Neurons I will present and review comparative and novel genomic data related to the diversity of nervous systems and gene expression profiling from various neurons. I will also discuss two evolutionary scenarios of the origin of […]

YAFREMAVA, Liudmila*; GILLETTE, Rhanor; University of Illinois at Urbana-Champaign: Multiplexed function in Serotonergic Neurons of Gastropod Molluscs A group of serotonergic neurons is highly conserved in cerebral ganglion lobes of opisthobranch and pulmonate gastropods. Known as the As1-4 group in Pleurobranchaea californica and the DSI neurons in Tritonia diomedia, these neurons were first discovered to […]

LOVELL, P.J.*; KOHN, A.B.; MOROZ, L.L.; Univ. of Florida, St. Augustine; Univ. of Florida, St. Augustine; Univ. of Florida, St. Augustine and Gainesville: Molluscan neurites grow into the genomic era: Insights from Aplysia transcriptome In developing nervous systems, neurons are faced with the daunting task of finding appropriate synaptic targets located far from their own […]