Redescription of<i>Saurichthys madagascariensis</i>Piveteau, 1945 (Actinopterygii, Early Triassic), with implications for the early saurichthyid morphotype

Kogan, Ilja; Romano, Carlo

doi:10.1080/02724634.2016.1151886

Cited by 19 publications

(35 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…-Stensiö (1919) erected the genus based on a maxilla from the Middle Triassic of Germany that contains teeth resembling those of the type material of 'Saurichthys' mougeoti Agassiz, 1843, which henceforth became the type species of Birgeria. The type material from the Muschelkalk of France and Germany is composed of several isolated teeth and dentigerous maxilla fragments, which clearly cannot be attributed to Saurichthys Agassiz, 1834, because in this taxon the maxilla lacks such large teeth (e.g., Stensiö, 1925;Rieppel, 1985;Mutter et al, 2008;Maxwell et al, 2015;Kogan and Romano, 2016a). The material of Agassiz (1833Agassiz ( -1843 and Stensiö (1919) is too fragmentary for identification at the species level, but bears close resemblance to material of other, much better known species referred to Birgeria.…”

Section: Methodsmentioning

confidence: 99%

“…elongatus, S. ornatus, and S. toxolepis the lachrymal reaches anteriorly beyond the level of the posterior external naris, whereas in S. cf. ornatus and S. madagascariensis the lachrymal extends less far rostrally (e.g., Stensiö, 1925;Mutter et al, 2008;Romano et al, 2012;Kogan and Romano, 2016a). The significance of this character requires further study.…”

Section: Taxonomy and Comparative Anatomymentioning

confidence: 99%

“…Three-dimensionally preserved skulls or skull fragments of Saurichthys (preserved as either body fossils or external molds) are frequently found in strata of Early Triassic age (Stensiö, 1925;Lehman, 1952;Schaeffer and Mangus, 1976;Beltan and Janvier, 1978;Minikh, 1981Minikh, , 1982Mutter et al, 2008;Romano et al, 2012;Kogan and Romano, 2016a; this study) or Middle Triassic age (Frech, 1903(Frech, -1908Hennig, 1909;Beltan et al, 1979;Rieppel, 1985;Wu et al, 2015), but are seemingly rare in younger deposits. Although saurichthyid crania contain some diagnostic features (e.g., Romano et al, 2012;Werneburg et al, 2014), species are predominantly differentiated by postcranial characters (e.g., squamation or fin segmentation pattern, morphology of the axial skeleton; e.g., Rieppel, 1985;Mutter et al, 2008;Tintori, 2013;Tintori et al, 2014b;Maxwell et al, 2015;Kogan and Romano, 2016a, b).…”

Section: Taxonomy and Comparative Anatomymentioning

confidence: 99%

“…In contrast, the lateral flange of the dermopterotic is more reduced in other Early Triassic species, such as S. madagascariensis Piveteau, 1945, S. cf. ornatus from Greenland, and S. wimani (Stensiö, 1925;Piveteau, 1944Piveteau, -1945Lehman, 1952;Mutter et al, 2008;Kogan and Romano, 2016a).…”

Section: Taxonomy and Comparative Anatomymentioning

confidence: 99%

See 3 more Smart Citations

Marine Early Triassic Actinopterygii from Elko County (Nevada, USA): implications for the Smithian equatorial vertebrate eclipse

Romano¹,

Jenks²,

Jattiot³

et al. 2017

J. Paleontol.

Self Cite

View full text Add to dashboard Cite

Abstract.-The Early Triassic vertebrate record from low paleolatitudes is spotty, which led to the notion of an 'equatorial vertebrate eclipse' during the Smithian. Here we present articulated ray-finned fishes (Actinopterygii), collected from the marine Lower Triassic Thaynes Group at three new localities in Elko County (Nevada, USA), which were deposited within the equatorial zone. From the Smithian of the Winecup Ranch, we describe two partial skulls of the predatory actinopterygian Birgeria (Birgeriidae), attributed to B. americana new species and Birgeria sp. Birgeria americana n. sp. is distinguished from other species by a less reduced operculogular series. With an estimated total length of 1.72-1.85 m, it is among the largest birgeriids. We confirm that Birgeria encompasses species with either two or three rows of teeth on the maxilla and dentary, and suggest that species with three well-developed rows are restricted to the Early Triassic. From the latest Smithian of Palomino Ridge, we present a three-dimensional, partial skull of the longirostrine predator Saurichthys (Saurichthyidae). This and other occurrences indicate that saurichthyids were common in the western USA basin. From the early late Spathian of Crittenden Springs, we describe a posterior body portion (Actinopterygii indet.). This find is important given the paucity of Spathian osteichthyan sites. We provide a summary of Early Triassic vertebrate occurrences in the United States, concluding that vertebrate fossils remain largely unstudied. The presence of predatory vertebrates in subequatorial latitudes during the Smithian confirms that Early Triassic trophic chains were not shortened and contradicts the 'equatorial vertebrate eclipse'.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Taxonomy and Comparative Anatomymentioning

confidence: 99%

Section: Taxonomy and Comparative Anatomymentioning

confidence: 99%

Section: Taxonomy and Comparative Anatomymentioning

confidence: 99%

See 2 more Smart Citations

Marine Early Triassic Actinopterygii from Elko County (Nevada, USA): implications for the Smithian equatorial vertebrate eclipse

Romano¹,

Jenks²,

Jattiot³

et al. 2017

J. Paleontol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It does not participate in the cranial midline, and extends slightly further posteriorly than the dermopterotic. We interpret this element as a lateral extrascapular, following the discussion about the homology in Kogan & Romano (2016). The posterior elongation of the skull roof in S. acutus relative to S. hauffi sp.…”

Section: Descriptionmentioning

confidence: 99%

Revision of Saurorhynchus (Actinopterygii: Saurichthyidae) from the Early Jurassic of England and Germany

Maxwell¹,

Stumpf²

2017

EJT

463

View full text Add to dashboard Cite

Abstract. Saurichthyidae is a speciose group of fishes, ranging from the Late Permian to the Middle Jurassic. Early Jurassic saurichthyids are usually considered morphologically less disparate and taxonomically less diverse than their Triassic counterparts, consisting of only two valid species. These were historically differentiated almost entirely based on cranial ratios, and both had stratigraphic ranges spanning the Early Jurassic. Here, we revise the Early Jurassic saurichthyid fishes of Europe based on restudy of the type material of Saurorhynchus brevirostris (Woodward, 1895) and S. acutus (Agassiz, 1844). We identify four species based on cranial osteology: S. acutus, S. brevirostris, S. anningae sp. nov., and S. hauffi sp. nov. Saurorhynchus brevirostris and S. anningae sp. nov. are known from the Sinemurian of England only, whereas S. acutus and S. hauffi sp. nov. share a broad European distribution during the Toarcian, from southwestern Germany to England. Saurorhynchus anningae sp. nov. and S. brevirostris, in particular, show disparity in such ecomorphologically important traits as cranial fineness, and tooth and jaw morphology. In contrast, S. acutus and S. hauffi sp. nov. show much lower levels of disparity, differing from each other in nostril morphology, dermal ornamentation, and position of the lateral extrascapular. The new species do not increase diversity estimates for Saurorhynchus in either the Sinemurian or Toarcian interval.

show abstract

The Zorzino Limestone Actinopterygian Fauna from the Late Triassic (Norian) of the Southern Alps

Tintori¹,

Lombardo

2017

Topics in Geobiology

View full text Add to dashboard Cite

Redescription ofSaurichthys madagascariensisPiveteau, 1945 (Actinopterygii, Early Triassic), with implications for the early saurichthyid morphotype

Cited by 19 publications

References 51 publications

Marine Early Triassic Actinopterygii from Elko County (Nevada, USA): implications for the Smithian equatorial vertebrate eclipse

Marine Early Triassic Actinopterygii from Elko County (Nevada, USA): implications for the Smithian equatorial vertebrate eclipse

Revision of Saurorhynchus (Actinopterygii: Saurichthyidae) from the Early Jurassic of England and Germany

The Zorzino Limestone Actinopterygian Fauna from the Late Triassic (Norian) of the Southern Alps

Contact Info

Product

Resources

About