Catastrophes, expectations, and the evidence - Geological Implications of Impacts of Large Asteroids and Comets on the Earth.L. T. Silver and P. H. Schultz (eds.). Geological Society of America, Special Paper 190. 1982. xix + 528 pp. $40.00 (paper).

Valen, Leigh M. Van

doi:10.1017/s0094837300008071

Cited by 24 publications

(2 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, it has been argued by a number of workers that prolonged volcanic activity that produced the Deccan traps may also have been a major influence (e.g. Van Valen 1984;Officer and Drakes 1985;Keller et al 2009). Thus it could be argued that any of these factors, either in isolation or in combination, would have had the potential to induce the high levels of phenotypic plasticity displayed by some elements of the Miria Formation fauna.…”

Section: Discussionmentioning

confidence: 99%

The serpulid polychaete Rotulispira from the Late Cretaceous of Western Australia

McNamara

2023

Rec West Aust Mus

View full text Add to dashboard Cite

Four species of the serpulid polychaete Rotulispira are described from Late Cretaceous strata in the Perth and Southern Carnarvon basins in Western Australia. New species described are Rotulispira glauerti sp. nov. and Rotulispira apiaria sp. nov., from late Santonian to early Campanian chalks, and Rotulispira protea sp. nov. from a late Maastrichtian marl. Rotulispira glauerti and R. apiaria sometimes formed a commensal relationship with the hydroid Protulophila gestroi Rovereto, 1901.This is the first record of hydroids from the Cretaceous of Australia. Distribution of the hydroids on the serpulid tubes, combined with the location of gastropod predatory incisions on R. protea, allow an assessment to be made of the likely life orientation of these species. Rotulispira protea is remarkable for the extremely high levels of phenotypic plasticity that it displays. Severe environmental stress is known to induce increased levels of phenotypic plasticity in living organisms. This phenomenon in Rotulispira suggests that severe environmental stress might have been a contributory factor in the end-Cretaceous mass extinction event.

show abstract

Section: Discussionmentioning

confidence: 99%

The serpulid polychaete Rotulispira from the Late Cretaceous of Western Australia

McNamara

2023

Rec West Aust Mus

View full text Add to dashboard Cite

show abstract

“…Another scenario (5)(6)(7)(8)(9)(10)(11)(12)(13)(14) invokes a series of intense volcanic events during a geologically short time interval to explain the K/T environmental changes. The investigations of Kennett and his co-workers (15) on the re volcanism indicate that nism is indeed episodic ods of intense activity s er intervals of relative…”

mentioning

confidence: 99%

Terminal Cretaceous Environmental Events

Officer

Drake

1985

Science

231

View full text Add to dashboard Cite

The geologic record of terminal Cretaceous environmental events indicates that iridium and other associated elements were not deposited instantaneously but during a time interval spanning some 10,000 to 100,000 years. The available geologic evidence favors a mantle rather than meteoritic origin for these elements. These results are in accord with the scenario of a series of intense eruptive volcanic events occurring during a relatively short geologic time interval and not with the scenario of a single large asteroid impact event.

show abstract

Mantle Degassing Unification of the Trans-K — T Geobiological Record

McLean

1985

Evolutionary Biology

View full text Add to dashboard Cite

Catastrophes, expectations, and the evidence - Geological Implications of Impacts of Large Asteroids and Comets on the Earth.L. T. Silver and P. H. Schultz (eds.). Geological Society of America, Special Paper 190. 1982. xix + 528 pp. $40.00 (paper).

Cited by 24 publications

References 56 publications

The serpulid polychaete Rotulispira from the Late Cretaceous of Western Australia

The serpulid polychaete Rotulispira from the Late Cretaceous of Western Australia

Terminal Cretaceous Environmental Events

Mantle Degassing Unification of the Trans-K — T Geobiological Record

Contact Info

Product

Resources

About