Synopsis Haut de page ↑
The fourth volume of the Eisenack Catalog, New Series contains mostly
species first described in a suite of recent Australasian
publications. Unless included in an earlier volume, all new species in
the following publications are covered here: Backhouse, 1987, 1988;
Bint, 1988; Davey,1988; Helby, 1987; Marshall, 1988, 1989, 1990a,
1990b; May et al., 1987; McMinn, 1988; Parker, 1988; Stevens, 1987 ;
Stevens and Helby, 1987 ; Stover and Helby, 1987a, 1987 c, 1987d;
Wilson, 1984a, 1984b, 1984c, 1988. This volume also contains "type
species" of genera based on Australasian material and not included in
Volumes 2 or 3, as well as two subspecies of Gochteodinia villosa
inadvertently omitted from Volume 3 and a revision of the generic
entry for the genus Moorodinium, incorrectly rendered as "Mooradinium"
in Volume 1.
The information in this volume, especially that pertaining to holotype
location and type material, has been reviewed by Australasian
researchers John Backhouse, Robin Helby and Graham Wilson. In some
cases this has led to revisions from the original publication, and
where appropriate such changes are identified in the text. The present
authors are grateful for these valuable reviews.
As in previous volumes, the format of the Type Occurrence section is
formally structured. Where possible, type occurrence information is
compartmentalized into separate geographic, lithostratigraphic and
geochronologic statements, separated by semi-colons. For example, in
Volume 3 the Type Occurrence for Xylochoarion hacknessense is given as
"Hackness, Yorkshire, England, U.K.; Hackness Rock; Quenstedtoceras
lamberti Zone, Late Callovian, Jurassic." This implies that the type
material of the species is from Hackness, is derived from the Hackness
Rock, and is of Late Callovian age. It is not stating that the
Hackness Rock is a Late (sic) Callovian lithological unit - it is of
course an Upper Callovian lithological unit.