. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. REVISION OF LATE VALANGINIAN CEPHALOPODA 353. Fig. 202. Distoloceras cf. irregulare Imlay. Whorl section of SAM-PCU1613. x 0,66. Superfamily hoplitaceae Douville, 1890 Family Desmoceratidae Zittel, 1895 Subfamily Eodesmoceratinae Wright, 1955 Genus Eodesmoceras Spath, 1924 Type species Ammonites celestini Pictet & Campiche, 1858; by original designation of Spath, 1924 Discussion Two subgenera are recognized within this genus (Wright in Arkell et al. 1957), viz. E. {Eodesmoceras) and E. {Miodesmoc
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. REVISION OF LATE VALANGINIAN CEPHALOPODA 353. Fig. 202. Distoloceras cf. irregulare Imlay. Whorl section of SAM-PCU1613. x 0,66. Superfamily hoplitaceae Douville, 1890 Family Desmoceratidae Zittel, 1895 Subfamily Eodesmoceratinae Wright, 1955 Genus Eodesmoceras Spath, 1924 Type species Ammonites celestini Pictet & Campiche, 1858; by original designation of Spath, 1924 Discussion Two subgenera are recognized within this genus (Wright in Arkell et al. 1957), viz. E. {Eodesmoceras) and E. {Miodesmoceras). Miodesmoceras is a Barremian form, distinguished from Eodesmoceras in being more compressed and in lacking constrictions, whilst the latter is considered of Valanginian- Lower Hauterivian age. Eodesmoceras haughtoni Spath from the Uitenhage Group lacks constrictions, and is much more compressed than the type of E. {Eodesmoceras) celestini (Pictet & Campiche). Consequently, the differences between these two subgenera blurr and they appear to be of little taxonomic use. Eodesmoceras haughtoni Spath, 1930 Fig. 203 Eodesmoceras haughtoni Spath, 1930: 141, pi. 13 (fig. 2a-e). Du Toit 1954: 384. Material The holotype, SAM-227, is the only specimen Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
