English Eocene and Oligocene Veneridae. Part I

Tremlett, W. E.

doi:10.1093/oxfordjournals.mollus.a064688

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“…Taxonomic identifications were based on personal observation and alpha-taxonomic in formation available in the literature (including Dall 1902;Jukes-Browne 1908;Stephenson 1923Stephenson , 1941Stephenson , 1952Stephenson , 1954Stephenson , 1955Marwick 1927;Palmer 1927;Frizzell 1936;Tremlett 1953;Palmer and Brann 1965;Moore 1969;Dockery 1977Dockery , 1982Vokes 1980;Sohl and Koch 1983, 1984Dhondt 1987;Saul and Popenoe 1992;Saul 1993;Kirby and Saul 1995;Roopnarine 1996;Harte 1998a,b;Roopnarine and Vermeij 2000, among others). A subgeneric taxonomy is available online at http://dx.…”

Section: Methodsmentioning

confidence: 99%

The K/T event and infaunality: morphological and ecological patterns of extinction and recovery in veneroid bivalves

Lockwood

2004

Paleobiology

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Although the causes of mass extinctions have been studied in detail, recoveries have received little attention until recently. In this study, I examine the influence of extinction versus recovery intervals on ecological patterns across the end-Cretaceous (K/T) event in veneroid bi valves. Systematic and stratigraphic data were collected for 140 subgenera of veneroids, ranging from the Late Cretaceous through Oligocene of North America and Europe. Morphological data were collected for 1236 specimens representing 101 subgenera. Extinction selectivity and differ ential recovery were assessed with respect to morphology, and by extension, burrowing ecology in these bivalves. Eighty-one percent of veneroid subgenera went extinct at the K/T and diversity did not return to preextinction levels until 12 million years later. Despite the severity of the K/T extinction, I found little evidence of morphological or ecological selectivity. The K/T recovery, in contrast, was strongly biased toward taxa with deep pallial sinuses (i.e., toward deeper burrowers). For veneroids, the morphological and ecological effects of the K/T event are not tied to the ex tinction itself, but to the recovery that followed. The K/T recovery initiated a trend toward deeper burrowing that helped to establish veneroids as one of the most abundant and successful groups of modern marine bivalves.

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Section: Methodsmentioning

confidence: 99%

The K/T event and infaunality: morphological and ecological patterns of extinction and recovery in veneroid bivalves

Lockwood

2004

Paleobiology

View full text Add to dashboard Cite

show abstract

English Eocene and Oligocene Veneridae. Part I

Cited by 1 publication

References 0 publications

The K/T event and infaunality: morphological and ecological patterns of extinction and recovery in veneroid bivalves

The K/T event and infaunality: morphological and ecological patterns of extinction and recovery in veneroid bivalves

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