RT Journal Article
T1 Dimorphism and endemism in Hebetoxyites (Ammonoidea, lower Bajocian)from the Iberian Range (Spain)
A1 Fernández López, Sixto Rafael
AB New findings of lower Bajocian, haploceratid ammonites (Cephalopoda, Mollusca) of the genus Hebetoxyites from the Albarracín areaare described and revised alongside specimens previously collected from the Iberian Range. Three species have been identified: H.hebes Buckman, H. incongruens Buckman and H. mouterdei Fernández-López. Indigenous populations of these Tethyan speciesin the Iberian carbonate platform system, including macroconchs and microconchs, are interpreted as immigration and colonization ofshallow-water marine environments by Submediterranean taxa during a short interval of the early Bajocian. As peramorphic result ofpalingenetic evolution, a chronocline from strongly ribbed, stout forms of the Ovale Zone (including H. mouterdei), to oxycones withblunt, simple or irregularly branched ribbing of the Laeviuscula Zone (including H. incongruens), through intermediate forms belon-
PB Muséum d'histoire naturelle de Genève
SN 1661-5468
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/44097
UL https://hdl.handle.net/20.500.14352/44097
LA eng
DS Docta Complutense
RD 7 abr 2025