Part H, Brachiopoda, vol. 1 &amp; 2, Complete Volume

Williams, Alwyn; Staton, R. D.; Muir-Wood, Helen M.; Grant, Ruth; Jope, H. M.; Hatai, Kotora; Rudwick, Martin J. S.; Boucot, A. J.; Amsden, Thomas W.; Elliott, G; Schmidt, H.; Wright, Antony; McLaren, D. J.; Rowell, A. J.; Ager, Derek; Stehli, F. G.; Pitrat, Charles W.; Johnson, J. G.; Biernat, Gertruda

doi:10.17161/dt.v0i0.5551

Cited by 4 publications

(5 citation statements)

References 0 publications

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“…in the species designation) or those that did not have stratigraphic information to the level of formation were removed. Taxonomy was standardized and updated using Muir-Wood and Copper (1960), Hoare (1961), Moore (1964), Williams et al (1965), and Carter and Carter (1970), which represent key references on brachiopods from this region and time interval.…”

Section: Methodsmentioning

confidence: 99%

The effects of geographic range size and abundance on extinction during a time of “sluggish”’ evolution

Casey¹,

Saupe²,

Lieberman³

2020

Paleobiology

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Geographic range size and abundance are important determinants of extinction risk in fossil and extant taxa. However, the relationship between these variables and extinction risk has not been tested extensively during evolutionarily “quiescent” times of low extinction and speciation in the fossil record. Here we examine the influence of geographic range size and abundance on extinction risk during the late Paleozoic (Mississippian–Permian), a time of “sluggish” evolution when global rates of origination and extinction were roughly half those of other Paleozoic intervals. Analyses used spatiotemporal occurrences for 164 brachiopod species from the North American midcontinent. We found abundance to be a better predictor of extinction risk than measures of geographic range size. Moreover, species exhibited reductions in abundance before their extinction but did not display contractions in geographic range size. The weak relationship between geographic range size and extinction in this time and place may reflect the relative preponderance of larger-ranged taxa combined with the physiographic conditions of the region that allowed for easy habitat tracking that dampened both extinction and speciation. These conditions led to a prolonged period (19–25 Myr) during which standard macroevolutionary rules did not apply.

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Section: Methodsmentioning

confidence: 99%

The effects of geographic range size and abundance on extinction during a time of “sluggish”’ evolution

Casey¹,

Saupe²,

Lieberman³

2020

Paleobiology

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“…We used works of the following authors for synonomyzing taxonomic names: Muir-Wood and Cooper (1960), Hoare (1961), Moore (1964), Williams et al (1965), McAlester (1968, Sturgeon and Hoare (1968), and Hoare et al (1979). Occurrences of out-of-date genera that have subsequently been split were discarded (unless a specimen was available for reidentification or the species name was re-← FIGURE 1.…”

Section: Introductionmentioning

confidence: 99%

Evaluating taxonomic turnover: Pennsylvanian–Permian brachiopods and bivalves of the North American Midcontinent

Olszewski¹,

Patzkowsky²

2001

Paleobiology

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Using museum and literature data, we characterize faunal turnover in bivalves and brachiopods of the North American Midcontinent over approximately 12.5 Myr spanning the Pennsylvanian/Permian boundary. The two groups experienced indistinguishable rates of background faunal turnover but differed in the type and timing of elevated turnover episodes. Bivalves underwent an episode of elevated first appearance in the Missourian Series whereas brachiopods underwent an episode of elevated disappearance in the Wolfcampian Series. In neither group does turnover history strongly correlate to long-term changes in basinal lithofacies, which reflect evolution of regional climate. Comparison with other time intervals and basins suggests that magnitude and frequency of turnover episodes during the late Paleozoic was intermediate between the more episodic early Paleozoic and less episodic Mesozoic.

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“…Brewer 1976, Cazaux 1958, Crisp 1974, Teitelbaum 1966, Williams 1965. Brewer 1976, Cazaux 1958, Crisp 1974, Teitelbaum 1966, Williams 1965.…”

Section: Settlement and Attachmentunclassified

“…The periostracum, as here defined, is known to be composed of a glycinepoor protein with some chitin and hydroxyproline (Jope in Williams et al 1965), but which of these constitute the structural components described above is unknown. The subperiostracal succession is not well-known except that the apatite occurs in lenses of fine needles up to 100 nm long, ensheathed in organic sheets which frequently include narrowly anastomosing fibres of chitin aligned parallel with the c-axes of the crystallites.…”

mentioning

confidence: 99%