Susannah C. R. Maidment
YOU?
Author Swipe
View article: Limb bone robusticity is coupled with mass distribution in terrestrial tetrapods
Limb bone robusticity is coupled with mass distribution in terrestrial tetrapods Open
The vertebrate body is a highly modular system within which evolutionary adaptation is expected to occur synchronously at a variety of hierarchical scales, from single tissue to whole organism. For example, the evolution of different body …
View article: Teeth from the Middle Jurassic of Morocco reveal the oldest turiasaurian sauropods from Africa
Teeth from the Middle Jurassic of Morocco reveal the oldest turiasaurian sauropods from Africa Open
Readily identifiable based on their large, “spatulate” teeth with diagnostic “heart”-shaped crowns, turiasaurians are non-neosauropodan eusauropods known from varied Jurassic and Cretaceous formations across Laurasia and Gondwana. Recently…
View article: The origins of neural spine elongation in iguanodontian dinosaurs and the osteology of a new sail‐back styracosternan (Dinosauria, Ornithischia) from the Lower Cretaceous Wealden Group of England
The origins of neural spine elongation in iguanodontian dinosaurs and the osteology of a new sail‐back styracosternan (Dinosauria, Ornithischia) from the Lower Cretaceous Wealden Group of England Open
The Wealden Group of southern England was deposited during the late Berriasian to early Aptian interval. It records a critical time in the development of iguanodontian dinosaur diversity, which increased from low levels during the Jurassic…
View article: <i>Enigmacursor mollyborthwickae</i> , a neornithischian dinosaur from the Upper Jurassic Morrison Formation of the western USA
<i>Enigmacursor mollyborthwickae</i> , a neornithischian dinosaur from the Upper Jurassic Morrison Formation of the western USA Open
Although their remains have been known since the 1870s, the small, bipedal ornithischian dinosaurs from the Upper Jurassic Morrison Formation of the western USA remain poorly known. The historic type specimens are incomplete and poorly pre…
View article: New perspectives on body size and shape evolution in dinosaurs
New perspectives on body size and shape evolution in dinosaurs Open
Diversity in the body shapes and sizes of dinosaurs was foundational to their widespread success during the Mesozoic era. The ability to quantify body size and form reliably is therefore critical to the study of dinosaur biology and evolut…
View article: New frontiers in dinosaur exploration
New frontiers in dinosaur exploration Open
Two hundred years after the naming of the first dinosaur, taxonomic studies remain an important component of dinosaur research. Around 50 new dinosaurs are named each year and are discovered from across the globe. The rate of new dinosaur …
View article: The first and most complete dinosaur skeleton from the Middle Jurassic of Scotland
The first and most complete dinosaur skeleton from the Middle Jurassic of Scotland Open
The fossil record of dinosaurs in Scotland mostly comprises isolated highly fragmentary bones from the Great Estuarine Group in the Inner Hebrides (Bajocian–Bathonian). Here we report the first definite dinosaur body fossil ever found in S…
View article: The world’s oldest cerapodan ornithischian dinosaur from the Middle Jurassic of Morocco
The world’s oldest cerapodan ornithischian dinosaur from the Middle Jurassic of Morocco Open
The cerapodan dinosaurs were an ornithischian clade that achieved a global distribution in the Cretaceous Period. The ichnological record suggests that these dinosaurs had evolved by the Middle Jurassic, but only a single cerapodan body fo…
View article: Evolution of growth strategy in alligators and caimans informed by osteohistology of the late Eocene early‐diverging alligatoroid crocodylian <i>Diplocynodon hantoniensis</i>
Evolution of growth strategy in alligators and caimans informed by osteohistology of the late Eocene early‐diverging alligatoroid crocodylian <i>Diplocynodon hantoniensis</i> Open
Among living crocodylians, alligatoroids exhibit a wide range of body sizes and a biogeographic distribution that spans tropical‐to‐subtropical climates. The fossil record of alligatoroids, however, reveals even greater diversity, includin…
View article: Palaeoenvironment and taphonomy of the <i>Hypsilophodon</i> Bed, Lower Cretaceous Wessex Formation, Isle of Wight
Palaeoenvironment and taphonomy of the <i>Hypsilophodon</i> Bed, Lower Cretaceous Wessex Formation, Isle of Wight Open
The Hypsilophodon Bed occurs at the top of the Wessex Formation (Early Cretaceous, Barremian) on the Isle of Wight, southern England. Numerous remains of the small ornithopod dinosaur Hypsilophodon foxii have been recovered from the bed si…
View article: The postcranial anatomy and osteohistology of <i>Terrestrisuchus gracilis</i> (Archosauria, Crocodylomorpha) from the Late Triassic of Wales
The postcranial anatomy and osteohistology of <i>Terrestrisuchus gracilis</i> (Archosauria, Crocodylomorpha) from the Late Triassic of Wales Open
The earliest crocodylomorphs, known as non‐crocodyliform crocodylomorphs, first appeared during the Late Triassic. In contrast to extant crocodylians, which are all semi‐aquatic, early crocodylomorphs represent terrestrial taxa with a full…
View article: A taxonomic revision and cranial description of <i>Terrestrisuchus gracilis</i> (Archosauria, Crocodylomorpha) from the Upper Triassic of Pant‐y‐Ffynnon Quarry (southern Wales)
A taxonomic revision and cranial description of <i>Terrestrisuchus gracilis</i> (Archosauria, Crocodylomorpha) from the Upper Triassic of Pant‐y‐Ffynnon Quarry (southern Wales) Open
Non‐crocodyliform crocodylomorphs, formerly referred to the informal group ‘Sphenosuchia’, are the earliest known crocodylomorph precursors of extant crocodylians. They are therefore crucial for our understanding of early crocodylian evolu…
View article: New Middle to ?Late Jurassic dinosaur tracksites in the Central High Atlas Mountains, Morocco
New Middle to ?Late Jurassic dinosaur tracksites in the Central High Atlas Mountains, Morocco Open
Besides bones, fossil tracks and trackways are important sources of knowledge about dinosaur palaeobiology. Here, we report three new tracksites from two different synclines in the Imilchil area, Central High Atlas, Morocco. The tracks and…
View article: Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
The secondary evolution of quadrupedality from bipedal ancestry is a rare evolutionary transition in tetrapods yet occurred convergently at least three times within ornithischian dinosaurs. Despite convergently evolving quadrupedal gait, o…
View article: ESM6: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM6: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Mean, maximum, and minimum elbow extension-flexion moment arms for each muscle
View article: ESM11: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM11: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Correlations between key muscle moment arms and osteological measurements
View article: Ornithischian forelimb musculosketal models
Ornithischian forelimb musculosketal models Open
Multi-body dynamics models of the forelimbs of ornithischians dinosaurs featured in "Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics" by Matthew Dempsey, Susannah C…
View article: ESM2: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM2: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Muscle moment arms normalised to humeral circumference across all target postures
View article: ESM3: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM3: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Mean, maximum, and minimum glenohumeral protraction-retraction moment arms for each muscle
View article: Morocco, Imilchil, Dinosaur Footprints. Photos of three sites, including close-ups of individual tracks and trackways, plus models.
Morocco, Imilchil, Dinosaur Footprints. Photos of three sites, including close-ups of individual tracks and trackways, plus models. Open
Photos and models from Imilichil, Morocco, dinosaur tracks.To be published in Royal Society Open Science, 2023
View article: ESM5: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM5: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Mean, maximum, and minimum glenohumeral mediolateral long-axis rotation moment arms for each muscle
View article: ESM10: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM10: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
PCA inputs and outputs
View article: OSTEOLOGY AND RELATIONSHIPS OF <i>CUMNORIA PRESTWICHII</i> (ORNITHISCHIA: ORNITHOPODA) FROM THE LATE JURASSIC OF OXFORDSHIRE, UK
OSTEOLOGY AND RELATIONSHIPS OF <i>CUMNORIA PRESTWICHII</i> (ORNITHISCHIA: ORNITHOPODA) FROM THE LATE JURASSIC OF OXFORDSHIRE, UK Open
The iguanodontian dinosaurs have a fossil record that extends from the Middle Jurassic to the end of the Cretaceous, by which time they had diversified to become the dominant herbivores of Laurasian ecosystems. They are historically import…
View article: ESM9: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM9: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Sensitivity analysis moment arm data
View article: Ornithischian forelimb musculoskeletal models
Ornithischian forelimb musculoskeletal models Open
Multi-body dynamics models of the forelimbs of ornithischians dinosaurs featured in the paper: Dempsey M, Maidment SCR, Hedrick BP, Bates KT. 2023 Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disp…
View article: The phylogenetic relationships and evolutionary history of the armoured dinosaurs (Ornithischia: Thyreophora)
The phylogenetic relationships and evolutionary history of the armoured dinosaurs (Ornithischia: Thyreophora) Open
The armoured dinosaurs (Thyreophora) were a significant component of Mesozoic terrestrial ecosystems, appearing in the earliest Jurassic and surviving until the latest Cretaceous, and fossils of the group have been found on all continents,…
View article: ESM7: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM7: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Mean, maximum, and minimum elbow abduction-adduction moment arms for each muscle
View article: ESM4: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM4: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Mean, maximum, and minimum glenohumeral abduction-adduction moment arms for each muscle
View article: ESM8: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics
ESM8: from Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics Open
Mean, maximum, and minimum elbow mediolateral long-axis rotation moment arms for each muscle