New species of dinoflagellate cysts and other palynomorphs from the latest Miocene and Pliocene of DSDP Hole 603C, western North Atlantic

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doi: 10.1666/0022-3360(2003)077<0001:NSODCA>2.0.CO;2
Author(s): Head, Martin J.; Norris, Geoffrey
Author Affiliation(s): Primary:
University of Cambridge, Department of Geography, Cambridge, United Kingdom
University of Toronto, Canada
Volume Title: Journal of Paleontology
Source: Journal of Paleontology, 77(1), p.1-15. Publisher: Paleontological Society, Lawrence, KS, United States. ISSN: 0022-3360 CODEN: JPALAZ
Note: In English. 49 refs.; illus., incl. strat. col., sketch map
Summary: Detailed investigation of the essentially complete uppermost Miocene through Lower Pleistocene sequence in Deep Sea Drilling Project (DSDP) Hole 603C, western North Atlantic, has revealed the presence of the new dinoflagellate cyst species Lejeunecysta hatterasensis, Lejeunecysta interrupta, Corrudinium devernaliae, and Pyxidinopsis vesiculata, as well as the acritarchs Leiosphaeridia rockhallensis Head new species and Leffingwellia costata new genus and species. Independent magnetobiostratigraphic control of DSDP Hole 603C constrains the ranges of these new species. Lejeunecysta interrupta n. sp. appears to range no higher than lowermost Pliocene at 5.2 Ma, Pyxidinopsis vesiculata n. sp. has a range top at about 4.5 Ma in the Lower Pliocene, Corrudinium devernaliae n. sp. has a well-defined range of 4.7-4.1 Ma within the Lower Pliocene, and Leiosphaeridia rockhallensis n. sp. has a similarly well-defined range of 4.4-3.9 Ma within the Lower Pliocene. The presence of Leiosphaeridia rockhallensis n. sp. in the Ramsholt Member of the Coralline Crag Formation, eastern England, supports an Early Pliocene age for this member.
Year of Publication: 2003
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Acritarchs; Atlantic Ocean; Biometry; Biostratigraphy; Cenozoic; Corrudinium; Corrudinium devernalieae; DSDP Site 603; Deep Sea Drilling Project; Dinoflagellata; IPOD; Leffingwellia; Leffingwellia costata; Leg 93; Leg 95; Leiosphaeridia; Leiosphaeridia rockhallensis; Lejeunecysta; Lejeunecysta hatterasensis; Lejeunecysta interrupta; Magnetostratigraphy; Microfossils; Miocene; Morphology; Neogene; North Atlantic; Northwest Atlantic; Palynomorphs; Pliocene; Pyxidinopsis; Pyxidinopsis vesiculata; Range; Tertiary; Upper Miocene
Coordinates: N352939 N352940 W0700142 W0700143
Record ID: 2003024468
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