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growth

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Series: GSA Special Papers
Published: 01 January 2014
DOI: 10.1130/2014.2503(09)
Journal Article
Published: 01 March 2002
Journal of Paleontology (2002) 76 (2): 197-210.
... analyzed during colony growth, or astogeny. Morphological measurements of zooecia, mesozooecia, and acanthostyles display similar patterns of change during colony growth in both populations but magnitudes are generally larger in the high diversity population. Canonical variates analyses provided...
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Journal Article
Published: 01 January 2002
Journal of Paleontology (2002) 76 (1): 109-122.
... ranging from the tertibrachs to quintibrachs. Growth of the aboral cup is generally isometric or roughly so. Conversely, the width:height ratios of brachs typically increase in progressively larger individuals. Similarly, most deposition of calcite on the columnals affects their width rather than height...
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Journal Article
Published: 01 January 2001
Journal of Paleontology (2001) 75 (1): 24-33.
.... Variation in subsequent growth history is reflected in corallum shape and change in diameter. Straight growth axes reflect partial burial accompanied by vertical growth, while growth axis curvature resulted from unequal settling into substrate or alternatively, life at the surface of substrate, with sharp...
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Journal Article
Journal: Paleobiology
Published: 01 January 2001
Paleobiology (2001) 27 (2): 369-378.
...Andrea Woydack; Beatriz Morales-Nin Abstract Teleost otoliths are located in the membranous labyrinth and are mainly composed of aragonite and a small amount of organic matrix. Their rhythmic growth may provide important data about age, growth, maturity, and life-history events. This article...
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Journal Article
Published: 01 November 2000
Journal of Paleontology (2000) 74 (6): 1191-1195.
... and Maxwell's interpretation. In ELGNM 1978.560 the posterior region of the skull is deeply embayed, whereas in the adult specimens of Elginia this region is filled in by two neomorphic (supernumerary) elements ( Fig. 2A ). Thus, it can be inferred that during growth two new bones were incorporated...
FIGURES
Journal Article
Journal: PALAIOS
Published: 01 February 2000
PALAIOS (2000) 15 (1): 33-48.
... that calcareous epizoans growing on ephemeral substrates (benthic animals with organic or spicular skeletons) account for a significant amount of carbonate sediment production in some cool-water settings; (2) to document the ecology and distribution of epizoic bryozoan growth on ephemeral, host substrates...
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Journal Article
Published: 01 January 2000
Journal of Paleontology (2000) 74 (1): 84-091.
... with a pterobranch mode of secretion than with a model of growth under an enveloping extrathecal mantle. 28 07 1999 The Paleontological Society 2000 First identified by Nicholson (1869 ), the Early Llandovery species Climacograptus innotatus Nicholson, 1869 was described as a unique species...
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Journal Article
Journal: Paleobiology
Published: 01 January 2000
Paleobiology (2000) 26 (3): 466-488.
...P. Martin Sander Abstract A new sampling technique for fossil bone (coring with a 5/8” bit) was used to sample longbones of all four sauropod genera from the Upper Jurassic Tendaguru beds of Tanzania for paleohistological study. Brachiosaurus and Barosaurus are represented by growth series...
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Journal Article
Journal: Paleobiology
Published: 01 October 1999
Paleobiology (1999) 25 (4): 471-482.
...Anthony E. Aldridge Abstract Accretionary outlines of many brachiopods are closely matched by one or more episodes of logarithmic spiral growth where each episode has a constant growth gradient. An episodic model supports the observations of abrupt change, but not that of gradual change...
Journal Article
Journal: Geology
Published: 01 August 1999
Geology (1999) 27 (8): 711-714.
Journal Article
Published: 01 July 1999
Journal of Paleontology (1999) 73 (4): 580-597.
...Graham A. Young; Robert J. Elias Abstract During growth of colonial corals, the basic organization of skeletal elements was determined by inherent factors, but arrangement of corallites within a colony could be affected if environmental change induced a modified growth form. Comparisons of internal...
Journal Article
Journal: PALAIOS
Published: 01 April 1999
PALAIOS (1999) 14 (2): 172-179.
Journal Article
Published: 01 March 1999
Journal of Paleontology (1999) 73 (2): 219-239.
Journal Article
Journal: Geology
Published: 01 March 1999
Geology (1999) 27 (3): 251-254.
... been difficult to test. Here, we describe recurrent patterns of damage resulting from element function in vivo which indicate that internal discontinuities within an element represent periods of use followed by further growth. The cyclical alternation of phases of growth and function provides...
Journal Article
Published: 01 February 1999
Journal of the Geological Society (1999) 156 (1): 89-103.
...BRIAN JONES; ROBIN W. RENAUT; MICHAEL R. ROSEN Abstract Oncoids that are actively growing in some of the shallow-water pools around Champagne Pool, Waiotapu, New Zealand, are formed of amorphous silica (opal-A) with minor amounts of native sulphur. The growth of these oncoids is being mediated...
Journal Article
Published: 01 January 1999
Journal of Paleontology (1999) 73 (1): 38-48.
.... fastigiatus has turbinate, cone- or horn-shaped colonies, straight to slightly curved, with zooids opening on the flat broad end of the cone; the sides of the cone comprise calcified exterior walls. This growth-form resembles some solitary rugose corals and other benthic animals thought to have lived with all...
Journal Article
Published: 01 January 1999
Journal of Paleontology (1999) 73 (1): 117-128.
Journal Article
Journal: PALAIOS
Published: 01 December 1998
PALAIOS (1998) 13 (6): 560-569.
... their shells close to isotopic equilibrium with respect to their environment. Three skeletal breaks found in one oyster formed from cessation of shell growth when summer temperature exceeded 27 degrees C. delta 18 O profiles show that ligamental increments formed annually from varying growth rates through...
Journal Article
Journal: Paleobiology
Published: 01 October 1998
Paleobiology (1998) 24 (4): 409-429.
... position was significantly correlated with position in the developmental cascade, with the amount of intercusp growth (when growth is relatively greater in some cusps than others), and with amount of evolutionary change. This indicates that tooth development exerts a local constraint on phenotypic...