Format:
44 S., V Bl. : Ill., Kt.
ISBN:
0856650293
Series Statement:
Scientific reports / British Antarctic Survey 80
Content:
A systematic study of more than 160 specimens belonging to 12 ammonite families is given. At least 38 species are recognized but poor preservation of most specimens makes them only generically determinable. One new heteromorph genus, Antarcticoceras, is proposed. Ten species are identified with or compared with known forms and seven are recognized as new, although their preservation is such that only four of these have been formally named: Bochianites gracilis, Antarcticoceras antarcticum, Sanmartinoceras (Theganeceras) grande and Silesites antarcticus. Other small heteromorphs and one oppeliid probably belong to new genera. The faunas are notable for their content of heteromorph forms; oppeliids, desmoceratids and silesitids are locally abundant. At least four distinct faunas ranging from Berriasian to Lower Albian age are recognized. The close proximity of the highest and lowest stratigraphical levels in the area (on either side of Pluto Glacier) suggest the presence of a large-scale fault in the locality of the glacier. In the appendix the known occurrences of the aconeceratid genus Sanmartinoceras s.s. are reviewed and it is concluded that the genus is not necessarily restricted to beds of Upper Aptian age or younger but it may also occur in the Lower Aptian.
Note:
MAB0014.001: ZSP-164-80
,
Bibliography: p. 40-43. - Alte Signaturen: AQ 3042/80 ; Th 14.096 ; 81.333
In:
Scientific reports
URL:
http://www.antarctica.ac.uk/about_bas/publications/scientific_reports/index.php
