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2021
Journal article
Cutting the Gordian knot: A historical and taxonomic revision of the Jurassic crocodylomorph Metriorhynchus
Metriorhynchidae was a clade of extinct crocodylomorphs that adapted to a pelagic lifestyle, becoming a key component of Mesozoic lagoonal and coastal marine ecosystems. The type genus Metriorhynchus is one of the best-known genera of Mesozoic crocodylomorphs, and since the mid-19th century, the ‘concept’ of Metriorhynchus has become associated with the referred species Me. superciliosus. Historically Metriorhynchus has...Young, Mark T ; Brignon, Arnaud ; Sachs, Sven ; Hornung, Jahn J ; Foffa, Davide …
Taxonomy, Crocodylomorpha, Metriorhynchidae, and Thalattosuchia
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2023
Journal article
Can modern technology uncover the secrets of evolution?
A mysterious group of fossils called the Elgin Reptiles has been puzzling scientists for centuries. Existing only as cavities hidden within rocks, these fossils could help scientists unravel the mysteries of evolution. Thanks to modern technologies, Dr Davide Foffa, a research associate at National Museums Scotland, and his colleagues have...Foffa, Davide
Palaeoecology, lagerpetids, Vertebrate Palaeontology, μCT scanning , Elgin Reptiles, Scleromochlus , and Palaeobiology
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2020
Journal article
Macroevolutionary trends in the genus Torvoneustes (Crocodylomorpha: Metriorhynchidae) and discovery of a giant specimen from the Late Jurassic of Kimmeridge, UK
The metriorhynchid crocodylomorph fauna of the Late Jurassic Kimmeridge Clay Formation (KCF) of the UK was highly diverse. One genus from this Formation, Torvoneustes, was unique in evolving dentition similar to known chelonivorous crocodylomorphs and enlarged attachment sites for the pterygoideus adductor musculature. Here we report the largest known Torvoneustes...macroevolution, body-size, Metriorhynchoidea, Kimmeridgian, Geosaurinae, and Torvoneustes
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2020
Journal article
Revision of Erpetosuchus (Archosauria: Pseudosuchia) and new erpetosuchid material from the Late Triassic ‘Elgin Reptile’ fauna based on μCT scanning techniques
The Late Triassic fauna of the Lossiemouth Sandstone Formation (LSF) from the Elgin area, Scotland, has been pivotal in expanding our understanding of Triassic terrestrial tetrapods. Frustratingly, due to their odd preservation, interpretations of the Elgin Triassic specimens have relied on destructive moulding techniques, which only provide incomplete, and potentially...Foffa , Davide ; Butler, Richard J ; Nesbitt, Sterling J ; Walsh, Stig ; Barrett, Paul M …
systematics, Erpetosuchidae , Erpetosuchus granti , Leptopleuron , and anatomy
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2015
Journal article
New specimen and revision of the late Jurassic teleosaurid 'Steneosaurus’ megarhinus.
Teleosaurids were a successful group of semi-aquatic crocodylomorphs that were an abundant part of coastal marine/lagoonal faunas during the Jurassic. Their fossil record suggests that the group declined in diversity and abundance during the Late Jurassic. 'Steneosaurus’ megarhinus (Hulke, 1871) from the Kimmeridge Clay Formation is a little known gracile...Foffa, Davide ; Young, Mark T ; Brusatte, Stephen L ; Steel, Lorna
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2020
Journal article
Convergent evolution and possible constraint in the posterodorsal retraction of the external nares in pelagic crocodylomorphs
Amongst Mesozoic marine reptiles, metriorhynchid crocodylomorphs were unique in evolving into pelagically adapted forms with little-to-no posterodorsal retraction of the external nares. Narial retraction is a common adaptation seen in sustained swimmers, notably occurring during cetacean evolution. Mesosaurids and the basalmost known members of ichthyosauriforms, thalattosaurians, saurosphargids, sauropterygians, pleurosaurids and... -
2014
Journal article
Tooth serration morphologies in the genus Machimosaurus (Crocodylomorpha, Thalattosuchia) from the Late Jurassic of Europe
Machimosaurus was a large-bodied durophagous/chelonivorous genus of teleosaurid crocodylomorph that lived in shallow marine and brackish ecosystems during the Late Jurassic. Among teleosaurids, Machimosaurus and its sister taxon ‘Steneosaurus’ obtusidens are characterized by having foreshortened rostra, proportionally enlarged supratemporal fenestrae and blunt teeth with numerous apicobasal ridges and a shorter...Young, Mark T ; Steel, Lorna ; Brusatte, Stephen L ; Foffa, Davide ; Lepage, Yves
Machimosaurus, Teleosauridae, ‘pseudo-denticles’, dental morphology, Europe, and enamel ridges
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Journal article
Revision of the Late Jurassic deep-water teleosauroid crocodylomorph Teleosaurus megarhinus Hulke, 1871 and evidence of pelagic adaptations in Teleosauroidea
Teleosauroids were a successful group of semi-aquatic crocodylomorphs that were an integral part of coastal marine/lagoonal faunas during the Jurassic. Their fossil record suggests that the group declined in diversity and abundance in deep water deposits during the Late Jurassic. One of the few known teleosauroid species from the deeper...Foffa, Davide ; Johnson, Michela M ; Young, Mark T ; Steel, Lorna ; Brusatte, Stephen L
Crocodylomorpha, Teleosauroidea, Kimmeridgian, and Aquatic adaptations
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2017
Journal article
A new metriorhynchid crocodylomorph from the Oxford Clay Formation (Middle Jurassic) of England, with implications for the origin and diversification of Geosaurini
Metriorhynchids are an extinct group of Jurassic–Cretaceous crocodylomorphs secondarily adapted to a marine lifestyle. A new metriorhynchid crocodylomorph from the Oxford Clay Formation (Callovian, Middle Jurassic) of England is described. The specimen is a large, fragmentary skull and associated single ramus of a lower jaw uniquely preserved in a septarian...Foffa, Davide ; Young, Mark T ; Brusatte, Stephen L ; Graham, Mark R ; Steel, L
Geosaurus, Jurassic, macrophagy, Ieldraan, Melksham monster, and Geosaurini
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2022
Journal article
Tough to digest: first record of Teleosauroidea (Thalattosuchia) in a regurgitalite from the Upper Jurassic of north‐eastern Italy
Postcranial remains of a small teleosauroid from the Upper Jurassic of north-eastern Italy are described in detail. The specimen, discovered in 1980 on a slab of Rosso Ammonitico Veronese (RAV Fm.; Bajocian–Tithonian), is represented by partially articulated thoracic, sacral and anterior caudal vertebrae, fractured and displaced osteoderms and pelvic girdle...Serafini, Giovanni ; Gordon, Caleb M ; Foffa, Davide ; Cobianchi, Miriam ; Giusberti, Luca
Rosso Ammonitico Veronese, SEM-EDS analysis , regurgitalite, Aeolodontinae , and Upper Jurassic
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