Cenozoic Seas: The View From Eastern North America by Edward J. Petuch

By Edward J. Petuch

>The wealthy fossil checklist of the Atlantic and Gulf coastal plains of the USA is a gold mine for scientists. The final thirty million years of Earth heritage are fantastically chronicled by means of a succession of fossil assemblages extending from the St. Lawrence River to Florida. Marine scientists, paleontologists, and systematic biologists alike want a thorough consultant to interpret this history.Cenozoic Seas: The View from jap North the United States analyzes the altering geography, the coming and departures of ecosystems and species, and the impact of weather on residing issues. the writer classifies all the region's fossil-bearing formations and their contents inside of a logical, descriptive framework of house and time, supplying a transparent direction for these learning evolution and extinction inside of particular groups of organisms. The publication can be a great box consultant for fossil creditors, supplying targeted details for all species illustrated. Many organisms have by no means earlier than been illustrated in a ebook on fossil shells.

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During Serravallian time, lowered water temperatures led to a major extinction event within the Salisbury Sea (Petuch, 1993) (Phase 1 of the “Transmarian Extinction”, see Chapter 10). Many of the tropical components of the Calvert Subsea fauna disappeared from the Transmarian Province and never again occurred as far north. Some of the retreating fauna included the gastropod genera Oliva (Strephona), Architectonica, Ficus, Sassia, Erato, Cerithiopsis, Seila, Niso, Cymia, Murexiella, Persicula, and Myurellina, the nautiloid cephalopod Aturia (Nautilidae) (Martin, 1904), and the bivalve genera Divalinga, Strigilla, and Iphigenia.

Chespeakeanus (Martin, 1904), Trophoninae-Muricidae); J= Transmariaturris Petuch, 1993 (T. calvertensis (Martin, 1904), Turridae); K= Calverturris Petuch, 1993 (C. bellacrenata (Conrad, 1841), Turridae); L= Mariaturricula Petuch, 1988 (M. biscatenaria (Conrad, 1834), Turridae). All specimens are from the Calvert, Choptank, and St. Mary’s Formations of Maryland. 32 Cenozoic Seas: The View from Eastern North America Current, no coral reefs or reef-associated carbonate environments were found within the boundaries of the Transmarian Province.

Harrisi and O. simonsoni). Those restricted to both the Calvert and Patuxent Subseas included Trisecphora, Planecphora, Chesathais, and Ecphorosycon (all Ocenebrinae-Muricidae) and Transmariaturris (Turridae). Confined to the Patuxent Subsea were the gastropod genera Cancellariella (Cancellariidae) and Panamurex (Stephanosalpinx) and Patuxentrophon (Muricidae). During Serravallian time, lowered water temperatures led to a major extinction event within the Salisbury Sea (Petuch, 1993) (Phase 1 of the “Transmarian Extinction”, see Chapter 10).

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