Foraminifera from the Arctic Slope of Alaska; Part 3, Cretaceous Foraminifera

Tappan, Helen

doi:10.3133/pp236c

Cited by 30 publications

(34 citation statements)

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“…No planktic species were retrieved and calcareous benthic species were rare and often poorly preserved compared to other reported Arctic timeequivalent calcareous faunas (e.g. Tappan, 1962). This would suggest that taphonomic loss through dissolution has to be taken into account.…”

Section: Foraminiferal Assemblages and Biostratigraphic Significancementioning

confidence: 81%

“…All residues were completely picked. Studies that aided taxonomic identifications of foraminifera included Tappan (1962), Chamney (1978), Sliter (1981), Wall (1983), McNeil (1997, Thomson et al (2011) and extensive systematic studies from the West-ern Interior Sea such as McNeil and Caldwell (1981) and others. Due to ongoing taxonomic studies no foraminiferal range chart is presented here.…”

Section: Methodsmentioning

confidence: 99%

“…Tappan, 1962, Sliter, 1981, Wall, 1983and McNeil, 1997, macrofossils (e.g. Jeletzky, 1970 andHall et al, 2005), diatoms (Tapia andHarwood, 2002 andWitkowski et al, 2011), radiolarians (Pugh, 2013) and palynomorph assemblages (e.g.…”

Section: Biostratigraphy and Geochronologymentioning

confidence: 99%

“…Cretaceous foraminiferal assemblages from the Arctic slope of Alaska were presented by Tappan (1962) (MacRae, 1992 andNúñez-Betelu et al, 1994). These authors propose a large hiatus between the Bastion Ridge and Kanguk formations spanning the entire Cenomanian.…”

Section: Biostratigraphy and Geochronologymentioning

confidence: 99%

See 3 more Smart Citations

Aptian to Santonian foraminiferal biostratigraphy and paleoenvironmental change in the Sverdrup Basin as revealed at Glacier Fiord, Axel Heiberg Island, Canadian Arctic Archipelago

Schröder-Adams

Herrle

Embry

et al. 2014

Palaeogeography, Palaeoclimatology, Palaeoecology

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Section: Foraminiferal Assemblages and Biostratigraphic Significancementioning

confidence: 81%

Section: Methodsmentioning

confidence: 99%

Section: Biostratigraphy and Geochronologymentioning

confidence: 99%

Section: Biostratigraphy and Geochronologymentioning

confidence: 99%

See 2 more Smart Citations

Aptian to Santonian foraminiferal biostratigraphy and paleoenvironmental change in the Sverdrup Basin as revealed at Glacier Fiord, Axel Heiberg Island, Canadian Arctic Archipelago

Schröder-Adams

Herrle

Embry

et al. 2014

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…The pyritized internal clasts are of benthic species; because a sieve was used, only those over 60 m were recovered. Tappan (1962) has proposed that pyritized diatoms reflect rapid burial in turbid, inner, sublittoral environments, e.g. near a deltaic environment.…”

Section: Jurassic and Cretaceous: Overview And Fossil Localitiesmentioning

confidence: 99%

Evolution of the diatoms: insights from fossil, biological and molecular data

2006

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Molecular sequence analyses have yielded many important insights into diatom evolution, but there have been few attempts to relate these to the extensive fossil record of diatoms, probably because of unfamiliarity with the data available, which are scattered widely through the geological literature. We review the main features of molecular phylogenies and concentrate on the correspondence between these and the fossil record; we also review the evolution of major morphological, cytological and life cycle characteristics, and possible diatom origins. The first physical remains of diatoms are from the Jurassic, and well-preserved, diverse floras are available from the Lower Cretaceous. Though these are unequivocally identifiable as centric diatoms, none except a possible Stephanopyxis can be unequivocally linked to lineages of extant diatoms, although it is almost certain that members of the Coscinodiscophyceae (radial centrics) and Mediophyceae (polar centrics) were present; some display curious morphological features that hint at an unorthodox cell division mechanism and life cycle. It seems most likely that the earliest diatoms were marine, but recently discovered fossil deposits hint that episodes of terrestrial colonization may have occurred in the Mesozoic, though the main invasion of freshwaters appears to have been delayed until the Cenozoic. By the Upper Cretaceous, many lineages are present that can be convincingly related to extant diatom taxa. Pennate diatoms appear in the late Cretaceous and raphid diatoms in the Palaeocene, though molecular phylogenies imply that raphid diatoms did in fact evolve considerably earlier. Recent evidence shows that diatoms are substantially underclassified at the species level, with many semicryptic or cryptic species to be recognized; however, there is little prospect of being able to discriminate between such taxa in fossil material.

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Upper Cretaceous zonal stratigraphy of the West Siberian Plain based on foraminifera

Podobina

Kseneva

2005

Cretaceous Research

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Foraminifera from the Arctic Slope of Alaska; Part 3, Cretaceous Foraminifera

Cited by 30 publications

References 0 publications

Aptian to Santonian foraminiferal biostratigraphy and paleoenvironmental change in the Sverdrup Basin as revealed at Glacier Fiord, Axel Heiberg Island, Canadian Arctic Archipelago

Aptian to Santonian foraminiferal biostratigraphy and paleoenvironmental change in the Sverdrup Basin as revealed at Glacier Fiord, Axel Heiberg Island, Canadian Arctic Archipelago

Evolution of the diatoms: insights from fossil, biological and molecular data

Upper Cretaceous zonal stratigraphy of the West Siberian Plain based on foraminifera

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