Browsing by Author "Newell, Norman Dennis, 1909-"
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Item Caspian-like relict molluscan fauna in the South American Permian. Bulletin of the AMNH ; v. 146, article 1(New York : [American Museum of Natural History], 1971) Runnegar, Bruce.; Newell, Norman Dennis, 1909-"Fossiliferous sediments of Permian age occupy an area in the Paraná Basin of Brazil, Uruguay, Paraguay, and Argentina equivalent to about one and one-half times the size of the Gulf of Mexico. The Estrada Nova Formation, ranging from 100 to 1000 meters thick near the middle of the Permian section, contains a widely distributed and diverse fauna of bivalve molluscs made known by J. Camargo Mendes and others. Many of these are silicified and very well preserved. The fauna is remarkable in being wholly confined, so far as is known, to the Paraná Basin. A critical review of the bivalves undertaken in the present paper shows that their family affinities are with marine Gondwana forms found in underlying strata (Tubarão Group) and in other Gondwana continents. The remarkable endemicity of the Estrada Nova fauna and carbon isotope paleosalinities suggest intrabasinal evolutionary radiation under conditions of brackish water and extreme isolation. The history of this relict sea compares favorably with the well-documented, extraordinary history of the Pontian Sea of southeastern Europe of late Cenozoic times and is reminiscent of 'sympatric' evolution of the fishes of east African lakes. The taxonomy of 24 generic and 57 specific names employed for the Permian bivalves is revised and their biologic and ecologic significance is analyzed"--P. 5.Item Classification of the Bivalvia. American Museum novitates ; no. 2206(New York, N.Y. : American Museum of Natural History, 1965) Newell, Norman Dennis, 1909-Item Edmondia and the Edmondiacea : shallow-burrowing Paleozoic pelecypods. American Museum novitates ; no. 2533(New York, N.Y. : American Museum of Natural History, 1974) Runnegar, Bruce.; Newell, Norman Dennis, 1909-"Edmondia, nominate genus of the family Edmondiidae and the superfamily Edmondiacea, has a deeply furrowed hinge plate on each valve. The furrow contains a row of small suspensory muscle insertions, previously interpreted as a ligament groove. Carboniferous and Permian genera Scaldia, Allorisma, and Cardiomorpha have broadly similar hinges and are grouped with Edmondia in the Edmondiidae. The presence of the hinge furrow distinguishes the Edmondiidae from otherwise similar representatives of the families Grammysiidae and Megadesmidae. All three families are here referred to the superfamily Pholadomyacea, and Edmondiacea is dropped"--P. [1].Item The genus Aphanaia Koninck, 1877, Permian representative of the Inoceramidae. American Museum novitates ; no. 2252(New York, N.Y. : American Museum of Natural History, 1966) Browne, Ida A.; Newell, Norman Dennis, 1909-; Clarke, William Branwhite, 1798-1878.Item Geological reconnaissance of Raroia (Kon Tiki) Atoll, Tuamotu Archipelago. Bulletin of the AMNH ; v. 109, article 3(New York : [American Museum of Natural History], 1956) Newell, Norman Dennis, 1909-; Newell Expedition to Raroia Atoll (1952)Item Hinge grades in the evolution of crassatellacean bivalves as revealed by Permian genera. American Museum novitates ; no. 2328(New York, N.Y. : American Museum of Natural History, 1968) Boyd, Donald Wilkin.; Newell, Norman Dennis, 1909-"The origin and affiliation of the conservative bivalve superfamily Crassatellacea Férussac, 1882 (= Astartacea d'Orbigny, 1844), have been uncertain. Some authors have regarded these mollusks as lucinoids. Others have placed them with the cyrenoids, or in a separate order of the Heterodonta, the 'Astartedonta.' Our discovery of numerous exceptionally well-preserved examples of the Crassatellacea of Permian age in Wyoming clarifies some problems of the early history of the group, showing how, by the acquisition of additional hinge teeth after Permian time, the hinge of living crassatellaceans became modified in separate lines from basically lucinoid to a more advanced hinge grade. Representatives of post-Paleozoic Crassatellidae and Astartidae through convergent evolution resemble one another more closely than do their Paleozoic ancestors, the new subfamilies Oriocrassatellinae and Astartellinae. Members of these Paleozoic subfamilies are sufficiently dissimilar to suggest a diphyletic origin for the Crassatellacea. The Bernard and Munier-Chalmas hinge formula and its implication of dental homologies are discussed, and a simplified, more objective hinge notation based on the Steinmann system is employed. Two new species, Oriocrassatella elongata and Astartella aueri, are described. Examples of hinge transposition of cardinal and anterior lateral teeth, but not the posterior laterals, are recorded in both. This partial transposition of hinge teeth, recorded for the first time in Paleozoic bivalves, indicates that the posterior laterals are genetically independent of the other hinge teeth"--P. [1]-2.Item Iteration of ligament structures in pteriomorphian bivalves. American Museum novitates ; no. 2875(New York, N.Y. : American Museum of Natural History, 1987) Newell, Norman Dennis, 1909-; Boyd, Donald Wilkin."Pteriomorphia, the largest subclass of the Bivalvia, includes such highly successful extant groups as the marine mussels, pearl shells, oysters, and scallops. Shells of different groups display surprisingly diverse structural types of ligaments (diagnostic traces of which are recognizable in fossils as old as the early Cambrian) and the ligaments have figured prominently in pteriomorph classifications. Within the context of general morphology, seven or eight ligament grades have been used to characterize families of pteriomorphs. But the same, or very similar, ligaments appear repeatedly as evolutionary novelties in separate taxonomic groups without evident phyletic origins or marked adaptive significance. Even their phylogenetic polarity is frequently in doubt. For example, one complex structure (duplivincular) is replaced geochronologically by a different, and simpler structure (alivincular) in families of the Arcacea, Anomiacea, Aviculopectinacea, and Pteriacea. 'Transitional' (new term), multivincular, and duplivincular ligaments all occur in the superfamily Pteriacea. Even where the geological succession of ligaments might be interpreted as indicating an ancestral-descendant relationship, the different grades of ligaments do not form gradational morphoclines. So this review is intended only to call attention to taxonomic and phylogenetic difficulties in evaluating ligament grades; we are withholding conclusions about classification until later"--P. [1].Item Marine Myalinidae (Bivalvia, Pterioida) from the Permian of West Texas. American Museum novitates ; no. 3469(New York, NY : American Museum of Natural History, 2005) McRoberts, Christopher A.; Newell, Norman Dennis, 1909-; Cooper, G. Arthur (Gustav Arthur), 1902-Marine bivalves of the family Myalinidae are an important benthic constituent of the Permian Reef Complex of West Texas and New Mexico. We describe and summarize the myalinids from Lower and Middle Permian reef and near-reef settings and infer living habits as either epifaunal or semi-infaunal byssally attached suspension feeders. The six myalinid species described are exceptionally preserved as silica pseudomorphs. Included in the fauna are two new taxa: Myalina lamellosa, a species with distinctive commarginal lamellae, and Myalina plicata, the only known myalinid with prominent radial plicae. The family Myalinidae is placed in the Ambonychioidea (Order Pterioida) and an emended diagnosis incorporates ligament characters and details of shell ultrastructure.Item Mesozoic invertebrate faunas of Peru. Part 1, General introduction, Part 2, Late Triassic gastropods from central Peru. Bulletin of the AMNH ; v. 101(New York : [American Museum of Natural History], 1953) Haas, Otto, 1887-; Jenks, William Furness, 1909-; Newell, Norman Dennis, 1909-; Newell Expedition to the Peruvian Andes (1947)Item Nacre in a Carboniferous pectinoid mollusc and a new subfamily Limipectininae. American Museum novitates ; ; no. 2970.(New York, N.Y. : American Museum of Natural History, 1990) Newell, Norman Dennis, 1909-; Boyd, Donald Wilkin.Item A new bivalve from the Permian of the western United States. American Museum novitates ; no. 2121(New York, N.Y. : American Museum of Natural History, 1962) Newell, Norman Dennis, 1909-; Ciriacks, Kenneth Wilmer, 1938-; Brady, Lionel F., 1880-1963; Adlington, G. Robert.Item A new limoid bivalve from the Texas Middle Permian. American Museum novitates ; no. 3264(New York, NY : American Museum of Natural History, 1999) Newell, Norman Dennis, 1909-"Fossils described as Gloverilima pratti new genus and new species are all from a single locality in West Texas. Equally informative Permian limoids are not known elsewhere in the world. Usually they are represented by poorly preserved small collections, or single specimens in which hinge characters are not observable. Inevitably, they are species in name only"--P. [1].Item A new Lower Triassic Permophorus from the central Rocky Mountains. American Museum novitates ; no. 3263(New York, NY : American Museum of Natural History, 1999) Newell, Norman Dennis, 1909-; Boyd, Donald Wilkin.Item A new Permian myalinid genus, Elversella, of West Texas. American Museum novitates ; no. 3311(New York, NY : American Museum of Natural History, 2001) McRoberts, Christopher A.; Newell, Norman Dennis, 1909-; Cooper, G. Arthur (Gustav Arthur), 1902-A distinctive myalinid bivalve Elversella rugosa new genus and species from the Middle Permian of West Texas is described. Elversella rugosa is characterized as being inequivalved, with a larger left valve covered rhythmically by coarse rugae and a smooth right valve that is somewhat smaller and less convex.Item A new Triassic coral fauna from Idaho. American Museum novitates ; no. 1797(New York, N.Y. : American Museum of Natural History, 1956) Squires, Donald Fleming.; Newell, Norman Dennis, 1909-Item A note on Permian crassatellid pelecypods. American Museum novitates ; no. 1878(New York, N.Y. : American Museum of Natural History, 1958) Newell, Norman Dennis, 1909-Item Notes on certain primitive heterodont pelecypods. American Museum novitates ; no. 1857(New York, N.Y. : American Museum of Natural History, 1957) Newell, Norman Dennis, 1909-Item Notes on micro-fabric in Upper Paleozoic scallops. American Museum novitates ; no. 2816(New York, N.Y. : American Museum of Natural History, 1985) Newell, Norman Dennis, 1909-; Boyd, Donald Wilkin."Microstructure of the outer shell layer of Upper Paleozoic pectinoid bivalves usually, but not always, is strikingly different in right and left valves, and the differences characterize groups at the generic and familial levels, serving to augment sparse morphologic characters available for taxonomic and phylogenetic studies. The progress note given here is one aspect of an ongoing comprehensive taxonomic survey of Permian and Lower Triassic Pectinacea"--P. [1].Item Organism communities and bottom facies, Great Bahama Bank. Bulletin of the AMNH ; v. 117, article 4(New York : [American Museum of Natural History], 1959) Newell, Norman Dennis, 1909-; Imbrie, John.; Purdy, Edward G.; Thurber, David L.Item An outline history of tropical organic reefs. American Museum novitates ; no. 2465(New York, N.Y. : American Museum of Natural History, 1971) Newell, Norman Dennis, 1909-"Organic reefs, especially shallow-water coral reefs of warm seas, are built by stable communities of organisms in a narrow adaptive zone of low stress. They have an extraordinarily good fossil record that may be applied to broad problems of evolution of the tropical marine biota and ancillary questions about past climates and changing distributions of land and sea over more than one-half billion years of earth history. This essay is an attempt at a synopsis through the eyes of a paleobiologist of some of the existing episodes in the history of the world's oceans and their organisms. The reef community is well suited for a leading role in this history"--P. [1].