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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP455.1
EISBN: 9781786203366
... condyle and the axes of the condyles converge medially in posterior view); (d) the presence of a large pneumatic foramen; and (e) the notch for the posterodorsal process of the proximal part of the wing phalanx 1. Elongation, size and age are in agreement with the referral to a pterodactyloid pterosaur...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP456.4
EISBN: 9781786203373
... relate to tsunami or storm events. At Lakki, the size of the boulders slightly favours a tsunami origin for deposition. By contrast, at Kommos, boulder size and geomorphology are consistent with storm parameters in the Mediterranean. The most compelling evidence for tsunami transport is found at Diplomo...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP455.6
EISBN: 9781786203366
... in size with the type specimen of the Late Cretaceous (Maastrichtian) azhdarchid pterosaur Arambourgiania philadelphiae ( Arambourg 1959 ) from the same locality/region. The material represents fragments of two cervical vertebrae, a neural arch, a left femur, a ?radius, and a metacarpal IV and bones...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP461.12
EISBN: 9781786203427
... unacknowledged diversity in size, geometry and internal structure of these reflectors. We are able to identify four distinct morphological features: (1) fingers; (2) inclusions; (3) sheets; and (4) folds. The ‘fingers’ and ‘inclusions’ probably form by shear instabilities at the boundary between the reflectors...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP455.17
EISBN: 9781786203366
... in texture and colour from the bony elements, and identified as remnants of the eggshell. The diminutive size of the skeleton, along with its arrangement and morphology, support the identification of this specimen as one of the very few pterosaur embryos known worldwide. Its similarity in size to other...
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Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP434.12
EISBN: 9781862391581
... capitosaurs, considering the large size and tusk-like teeth), one small hollow longbone, presumably from a pterosaur or theropod, a putative phytosaur scute, and some yet unidentified teeth ( Milàn et al. 2012 a ). These, however, require further preparation and will be the topic of further publications...
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Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP423.5
EISBN: 9781862399556
... in the Virgin Hills trilobites are dominated by a reduction in body size and eye size and, to a lesser extent, a reduction in exoskeletal vaulting. Although recording no sedimentological signature, the fauna was strongly affected by the two globally recognized Kellwasser extinction events. The first, at the end...
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Series: GSA Special Papers
Published: 01 October 2015
DOI: 10.1130/2015.2518(07)
... Spherules from three impact layers ranging in age from 3.24 Ga to 2.49 Ga display petrologic and size diversity. All of these layers represent the distal debris from asteroid impacts in the Archean and early Proterozoic. We examine the petrologic control on the size of these spherules. Though...
Series: GSA Special Papers
Published: 01 January 2014
DOI: 10.1130/2014.2503(13)
Series: GSA Special Papers
Published: 01 October 2012
DOI: 10.1130/2012.2490(02)
... that bioturbation by burrowing animals has had, and continues to have, a major impact on the size, shape, nature, and origin of present-day mounds. Statistical analysis of 124 intact and 190 truncated mounds at the Little Manitou Lake site indicates that mounds form a more regular than random pattern, with strong...
Series: GSA Special Papers
Published: 01 September 2010
DOI: 10.1130/2010.2465(18)
Series: GSA Special Papers
Published: 01 January 2009
DOI: 10.1130/2009.2458(27)
... deposits in one core hole from the outermost part of the collapsed zone (i.e., Langley) as well as a core hole from the moat of the basement crater (i.e., Eyreville A). Comparisons of clast provenance and flow dynamics show that at both locations, there is a clear change in clast frequency and size between...
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(15)
... of vertebrae, ribs, paddle elements, and a partial skull. The partial skeleton is referable to the subfamily Tylosaurinae, cf. Tylosaurus sp., based on large size, tooth structure, and long pre-dental rostrum. Further identification must await resolution of the taxonomy of the Tylosaurinae. A lower jaw...
Journal Article
Published: 01 January 2001
Journal of Paleontology (2001) 75 (1): 136-146.
... of Ulrichidiscus by the presence of large spines on the ambulacral cover plates, anal pyramid plates, and hydropore orals. Two small specimens are assigned tentatively to Ulrichidiscus aff. pulaskiensis. Edrioasteroid populations occurring on several surfaces show marked differences in size frequency distribution...
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Journal Article
Journal: Paleobiology
Published: 01 January 2001
Paleobiology (2001) 27 (2): 379-391.
... genus in the Gargano palaeofauna and is represented by at least three evolutionary lineages. The incisors are used to describe the size evolution in these lineages, and we come to the conclusion that these lineages did not follow the same evolutionary trend: two of them evolve toward larger size, while...
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Journal Article
Published: 01 November 2000
Journal of Paleontology (2000) 74 (6): 1161-1172.
... on the double-bladed, plagiaulacoid shearing complex suggest that abderitids used these teeth to prepare a variety of resistant food items as do modern marsupials with double-bladed shearing systems. Data summarizing molar-shearing morphology and body size further suggest that A. meridionalis was a frugivore...
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Journal Article
Published: 21 September 2000
Canadian Journal of Earth Sciences (2000) 37 (10): 1377-1387.
... ammonites, dimorphism is manifest mainly by differences in relative adult sizes and in strength of ornamentation, the microconch being smaller and more strongly ornamented. Corresponding author (e-mail: pal_lab@jugeo.clibø.ernet.in ) 1 3 1999 1 6 2000 © 2000 NRC Canada 2000...
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Journal Article
Journal: Paleobiology
Published: 01 January 2000
Paleobiology (2000) 26 (3): 466-488.
... of growth line (here termed “polish lines”). In addition, Barosaurus bone revealed two types of histology, tentatively interpreted as sexual morphs. The Tendaguru sauropods show a common growth pattern in which growth is determinate but sexual maturity is achieved well before maximum size is reached...
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Journal Article
Journal: PALAIOS
Published: 01 December 1999
PALAIOS (1999) 14 (6): 520-529.
...Gwen M. Daley Abstract The common Ordovician bivalve genus Ambonychia Hall of the type Cincinnatian Series displays great variation in shell size that is strongly correlated with paleoenvironment. In older Cincinnatian sequences the largest mean and maximum shell size are found in the highest...