The Lower Eocene (Ypresian) Chondrichthyes from Egem, Belgium

Introduction p. 5
Materials and Methods p. 5
Terminology p. 6
Abbreviations p. 6
Geological overview of the Ampe Quarry at Egem, Belgium p. 7
Tielt Formation p. 8
Kortemark Silt Member p. 8
Egemkapel Clay Member p. 9
Hyon Formation p. 9
Egem Sand Member p. 9
Gentbrugge Formation p. 10
The Pittem Clay Member p. 10
Systematic Palaeontology p. 11
Order Hexanchiformes Buen, 1926 p. 11
Family Hexanchidae Grey, 1851 p. 11
Hexanchus agassizi Cappetta, 1976 p. 11
Weltonia burnhamensis Ward, 1979 p. 13
Notorynchus serratissimus Agassiz, 1843 p. 15
Order Squaliformes Goodrich, 1909 p. 17
Family Squalidae Bonaparte, 1834 p. 17
Squalus minor Leriche, 1905 p. 17
Family Dalatiidae Grey, 1851 p. 20
Isistius trituratus (Winkler, 1874) p. 20
Order Squatiniformes Buen, 1926 p. 20
Family Squatinidae Bonaparte, 1838b p. 20
Squatina crassa Daimeries, 1889 p. 21
Squatina prima (Winkler, 1874) p. 21
Order Heterodontiformes Berg, 1937 p. 25
Family Heterodontidae Grey, 1851 p. 25
Heterodontus vincenti (Leriche, 1905) p. 26
Order Orectolobiformes Compagno, 1973 p. 41
Family Parascylliidae Gill, 1862b p. 41
Pararhincodon ypresiensis Cappetta, 1976 p. 41
Family Brachaeluridae Cappetta, 1987 p. 43
Eostegostoma angustum (Nolf & Taverne) in Herman, 1977a p. 43
Family Ginglymostomatidae Gill, 1862 p. 44
Nebrius thielensis (Winkler, 1874) p. 44
Protoginglymostoma ypresiensis (Casier, 1946) p. 47
Family Rhincodontidae Garman, 1913 p. 47
Paleorhincodon wardi Herman, 1974 p. 47
Species List p. 49
Acknowledgements p. 50
References p. 51