Where: Kazakhstan (44.6° N, 51.6° E: paleocoordinates 38.1° N, 45.3° E)
• coordinate stated in text
When: Late/Upper Maastrichtian (70.6 - 66.0 Ma)
Environment/lithology: shallow subtidal; fine-grained, white limestone and marl
• The Maastrichtian chlak is overlian by a 10-20 mm thick flasered grey marl (Bed 8) which rests on an omission surface. Nazarov et al. (1983) recorded an iridium 'spike' within this bed. Thalassinoides burrows (idiomorphic, omission-suite) which contain a dark marl fill, penetrate 0.3 m down into the Maastrichtian Bed 7.
Size class: macrofossils
Primary reference: C. H. Jeffery. 1997. All Change at the Cretaceous-Tertiary Boundary? Echinoids from the Maastrichtian and Danian of the Mangyshlak Peninsula, Kazakhstan. Palaeontology 40(3):659-712 [L. Ivany/P. Wall/P. Wall]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 48022: authorized by Linda Ivany, entered by Patrick Wall on 10.03.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Echinoidea | |
Cyclaster galei n. sp.
Cyclaster galei n. sp. Jeffery 1997 heart urchin | |
Pseudoffaster caucasicus sea urchin | |
Galerites stadensis sea urchin | |
Conulus magnificus sea urchin | |
"Phymosoma granulosum" = Rachiosoma corollare
"Phymosoma granulosum" = Rachiosoma corollare Leske 1778 sea urchin |