Georgescu, M. Dan and Abramovich, Sigal (2008): A new serial Cretaceous planktic foraminifer (family Heterohelicidae Cushman, 1927) from the upper Maastrichtian of the equatorial Central Pacific
Leg/Site/Hole:
Related Expeditions:
DSDP 10
Identifier:
ID:
2009-059224
Type:
georefid
ID:
10.1144/0262-821X07-013
Type:
doi
Creator:
Name:
Georgescu, M. Dan
Affiliation:
University of Calgary, Department of Geoscience, Calgary, AB, Canada
Role:
author
Name:
Abramovich, Sigal
Affiliation:
Ben Gurion University of the Negev, Israel
Role:
author
Identification:
Title:
A new serial Cretaceous planktic foraminifer (family Heterohelicidae Cushman, 1927) from the upper Maastrichtian of the equatorial Central Pacific
Year:
2008
Source:
Journal of Micropalaeontology
Publisher:
British Micropalaeontological Society, London, United Kingdom
Volume:
27, Part 2
Issue:
Pages:
117-123
Abstract:
A new serial planktic foraminifer, Lipsonia lipsonae nov. gen., nov. sp., is reported from the Upper Maastrichtian sediments of the equatorial Central Pacific (Shatsky Rise). It presents raised sutures throughout, ornamentation consisting of coarse irregular structures on the early part of the test and smooth test surface in the adult stage. The absence of costate ornamentation suggests that the new taxon origins should probably be found in the contemporaneous non-costate species of the Laeviheterohelix glabrans-L. dentata group. Lipsonia lipsonae presents morphological similarities with the Santonian genus Sigalia. The costate test surface and sutures of the latter indicates that it evolved from a costate species. Accordingly, Lipsonia and Sigalia are the results of iterative evolution from two different heterohelicid groups. J. Micropalaeontol. 27(2): 117-123, November 2008.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:32.2700 West:157.4300 East:
174.4004 South:21.2101
Keywords: Invertebrate paleontology; Atlantic Coastal Plain; Atlantic Ocean; Blake Nose; Blake Plateau; Caribbean Sea; Central Pacific; Cretaceous; Deep Sea Drilling Project; DSDP Site 111; DSDP Site 152; DSDP Site 305; DSDP Site 356; DSDP Site 357; DSDP Site 384; DSDP Site 463; DSDP Site 577; DSDP Site 95; Exmouth Plateau; Foraminifera; Globigerinacea; Globigerinina; Gulf of Mexico; Heterohelicidae; Indian Ocean; Invertebrata; IPOD; Leg 10; Leg 12; Leg 122; Leg 15; Leg 171B; Leg 174AX; Leg 198; Leg 32; Leg 39; Leg 43; Leg 62; Leg 86; Lipsonia lipsonae; Maestrichtian; Mesozoic; microfossils; Mid-Pacific Mountains; morphology; new taxa; Nicaragua Rise; North Atlantic; North Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 1049; ODP Site 1050; ODP Site 1052; ODP Site 1212; ODP Site 761; ODP Site 762; Pacific Ocean; planktonic taxa; Protista; Rio Grande Rise; Rotaliina; SEM data; Senonian; Shatsky Rise; South Atlantic; taxonomy; United States; Upper Cretaceous; upper Maestrichtian; West Pacific; Wombat Plateau;
.