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Stenopterygius

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Journal Article
Published: 01 January 2012
Journal of Paleontology (2012) 86 (1): 105–115.
... is Stenopterygius. In spite of almost 200 years of research effort, the number of species in this genus is still a point of active disagreement in the literature. Here, bivariate and multivariate analyses are used to classify both articulated and disarticulated skeletons to the level of species, using measurement...
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(a) Tibia of SMNS 51130,  <span class="search-highlight">Stenopterygius</span>  cf.  uniter , and (b) flipper of ...
Published: 03 May 2013
Figure 2. (a) Tibia of SMNS 51130, Stenopterygius cf. uniter , and (b) flipper of SMNS 50329, Temnodontosaurus cf. trigonodon prior to sectioning, with the plane of sectioning indicated. (c) Microstructural overview of tibia (SMNS 51130) and (d) metacarpal
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(a–d) Tibia of SMNS 51130,  <span class="search-highlight">Stenopterygius</span>  cf.  uniter ; (e–h) SMNS 50329,...
Published: 03 May 2013
Figure 3. (a–d) Tibia of SMNS 51130, Stenopterygius cf. uniter ; (e–h) SMNS 50329, Temnodontosaurus cf. trigonodon metacarpal II. Images in (a), (d), (e) and (g) are in normal transmitted light, (c) and (h) in cross-polarized light, and (b) and (f) in cross
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Number of notches in the forelimb of  <span class="search-highlight">Stenopterygius</span> quadriscissus  (a) plo...
Published: 03 May 2013
Figure 4. Number of notches in the forelimb of Stenopterygius quadriscissus (a) plotted against lower jaw length, a proxy for body size, and (b) number of notches in the forelimb plotted against stratigraphic provenance. The numbering of the beds follows a local
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Schematic drawing of a skull of <span class="search-highlight">Stenopterygius</span> quadriscissus (SMNS 50963) i...
Published: 01 January 2012
F igure 3 Schematic drawing of a skull of Stenopterygius quadriscissus (SMNS 50963) indicating the most important cranial measurements. Abbreviations: ang = angular; ar = articular; bo = basioccipital; dent = dentary; ex = exoccipital; j = jugal; lac = lacrimal; mx = maxilla; n = nasal; pa
Journal Article
Published: 14 November 2019
Geological Magazine (2020) 157 (4): 640–650.
... character for the genus/species. This reflects intraspecific variation, not evidence of a new taxon. The specimen enables comparisons of skull roof morphology with Ichthyosaurus and Stenopterygius , two common Early Jurassic taxa. In particular, the position of the pineal foramen is similar...
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Journal Article
Published: 17 May 2013
Geological Magazine (2014) 151 (1): 49–59.
... in the evolutionary history of parvipelvian ichthyosaurs. In this contribution we present updated information on these fossils, including a phylogenetic analysis, and a redescription of ‘ Stenopterygius grandis ’ Cabrera, 1939. Patagonian ichthyosaur occurrences indicate that during the Bajocian the Neuquén Basin...
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(a) MLP 92-III-2–1. Ophthalmosaurian forefin. (b–f) MLP 39-VII-2–2. Holotyp...
Published: 17 May 2013
Figure 5. (a) MLP 92-III-2–1. Ophthalmosaurian forefin. (b–f) MLP 39-VII-2–2. Holotype of ‘ Stenopterygius grandis ’. (b) Dorsal view; (c) ventral view; (d) anterior view; (e) lateral view; (f) detail of the anterior extension of the right
Journal Article
Journal: Paleobiology
Published: 01 January 2013
Paleobiology (2013) 39 (1): 123–134.
..., we examine limb integration in the Lower Jurassic ichthyosaur Stenopterygius quadriscissus , with the aim of examining the effect of ontogeny and anagenetic changes over short geological time spans on metrics of limb integration. Both ontogenetic and stratigraphic effects had a significant influence...
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Journal Article
Published: 03 May 2013
Geological Magazine (2014) 151 (1): 29–40.
...Figure 2. (a) Tibia of SMNS 51130, Stenopterygius cf. uniter , and (b) flipper of SMNS 50329, Temnodontosaurus cf. trigonodon prior to sectioning, with the plane of sectioning indicated. (c) Microstructural overview of tibia (SMNS 51130) and (d) metacarpal...
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Journal Article
Published: 01 August 1977
Canadian Journal of Earth Sciences (1977) 14 (8): 1916–1924.
...R. Johnson Abstract A method is presented for estimating relative age, regardless of size, in a group of fossil reptiles. Unequivocal evidence of relative age independent of size is available for Stenopterygius , a Jurassic ichthyosaur, since gravid females have been found. Osteological features...
Journal Article
Journal: Paleobiology
Published: 06 November 2015
Paleobiology (2016) 42 (1): 117–126.
... the ichthyosaurs coinciding with peak invertebrate extinction. Large ichthyosaurs were absent from the fauna during the extinction interval, but became more abundant in the immediate aftermath. Stenopterygius quadriscissus , the most abundant species during the extinction interval, increased in body size after...
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Journal Article
Published: 29 October 2013
Geological Magazine (2014) 151 (1): 7–20.
... the condition seen in Temnodontosaurus , Ichthyosaurus and Stenopterygius (Maisch & Matzke, 2000 a ; Caine & Benton, 2011 ). A large, flat acromial process is present anteriorly as in Stenopterygius (Johnson, 1979 ), ophthalmosaurids (Maxwell...
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Selected ratio data, sorted based on the length of the lower jaw. Parameter...
Published: 01 January 2012
T able 1 Selected ratio data, sorted based on the length of the lower jaw. Parameters for which Stenopterygius triscissus or S. uniter do not overlap with S. quadriscissus are in bold font.
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(a, b) Principle of the Wellman method. (a) Sketch of an ichthyosaur,  Sten...
Published: 01 January 2007
Figure 1. (a, b) Principle of the Wellman method. (a) Sketch of an ichthyosaur, Stenopterygius , showing rectangular shapes of centra in vertebral column (after illustration on p. 426 in Fenton & Fenton, 1989 ). Inset shows the rectangles obtained by drawing lines parallel to sides
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Diagram illustrating the nomenclatural disagreement between authors with re...
Published: 01 January 2012
F igure 1 Diagram illustrating the nomenclatural disagreement between authors with regard to the species of Stenopterygius. Names considered nomen dubia are indicated by a strike-through, those followed by a question mark are considered species inquirendae by the author in question.
Journal Article
Published: 04 April 2013
Geological Magazine (2014) 151 (1): 41–48.
... ) and subsequently become the only surviving clade of ichthyosaurs by the Callovian (McGowan & Motani, 2003 ). To date, only three valid ichthyosaur species have been named from the Aalenian–Bathonian interval. Two represent more basal taxa, including Stenopterygius aaleniensis Maxwell...
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Journal Article
Published: 01 May 1976
Canadian Journal of Earth Sciences (1976) 13 (5): 668–683.
... Cretaceous, and with an undescribed ichthyosaur from the Middle Triassic of Switzerland, and least phenetic affinity with Ophthalmosaurus discus (Marsh).The phenetic analysis also revealed that the division of the Ichthyosauria into latipinnates and longipinnates is questionable. Stenopterygius quadriscissus...
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The smallest (SMNS 52036; 208 cm in length), mid-range (SMNS 50963; 285 cm)...
Published: 06 November 2015
Figure 3 The smallest (SMNS 52036; 208 cm in length), mid-range (SMNS 50963; 285 cm) and largest (MHH 1981/33; 310 cm) pregnant Stenopterygius quadriscissus specimens in the sample, illustrating the range of body sizes of sexually mature
Journal Article
Published: 28 December 2020
Geological Magazine (2021) 158 (7): 1305–1322.
... boundary interval) of Eastern Siberia. The taxonomic composition of Toarcian marine reptile assemblages of Siberia highlight their cosmopolitan nature, with the presence of taxa previously known nearly exclusively from coeval strata of Europe, such as ichthyosaurians Temnodontosaurus and Stenopterygius...
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