Dinosaur palaeoneurology: an evolving science DOI Creative Commons
Amy M. Balanoff

Biology Letters, Год журнала: 2024, Номер 20(12)

Опубликована: Дек. 1, 2024

Our fascination with dinosaur brains and their capabilities essentially began the first discovery. The history of this study is a useful reflection palaeoneurology as whole its relationship to more inclusive evolutionary neuroscience. I argue that imbued high heuristic potential, but one whose realization requires overcoming certain constraints. These constraints include need for stable phylogenetic framework, methods efficient precise endocast construction, fossil researchers who are steeped in neuroscience perspective. progress has already been made these areas sets stage mature palaeoneurology—not only capable being informed by discoveries drives such discoveries. draw from work on size, shape, behavioural correlates developmental role brain outline current advances palaeoneurology. My examples largely taken theropods centre questions related origin birds unique locomotory capabilities. hope, however, exemplify potential other groups, utilizing dinosaur–bird lineage parallel model par mammals studying encephalization.

Язык: Английский

The origin and early evolution of feathers: implications, uncertainties and future prospects DOI Creative Commons
Xing Xu, Paul M. Barrett

Biology Letters, Год журнала: 2025, Номер 21(2)

Опубликована: Фев. 1, 2025

As a defining feature of the clade, feathers are key to understanding bird biology. Discoveries spectacular dinosaur and pterosaur fossils preserving feather-like integumentary appendages demonstrate trends increasing complexity in gross morphology microstructure through avemetatarsalian evolution, acquisition complex flight before origin birds. Moreover, this material shows some early differed from modern morphologically, ultrastructurally, biochemically developmentally, revealing evolutionary pathways absent taxa. These advances have changed conventional dinosaurs impacted conceptions both birds feathers. However, it remains unknown if ‘true’ originated at base Avemetatarsalia or within Theropoda. The former scenario implies multiple feather losses, developmental mechanisms which require investigation; latter suggests pterosaurs ornithischians independently evolved filamentous appendages, might shared genetic regulatory networks with theropod Answering these questions requires additional data on integument, particularly for sauropodomorphs, diverging theropods outgroups, more information those taxa known features. An integrative approach combining morphological, developmental, biochemical taphonomic data, including extinct extant taxa, is essential clearer evolution.

Язык: Английский

Процитировано

1
The smallest known specimen of Microraptor (Dinosauria: Dromaeosauridae) from the Jiufotang Formation in northeastern China DOI

Ranwei Wang,

Rui Pei

Historical Biology, Год журнала: 2024, Номер unknown, С. 1 - 11

Опубликована: Авг. 13, 2024

Язык: Английский

Процитировано

3
Morphlight Theory Inspired by Raptor: Arm‐Wing Cooperative Control Method and its Application DOI Open Access
Di Tang, Yibo Zhao, Kunpeng Wang

и другие.

Journal of Field Robotics, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

ABSTRACT Avians can change their wing shape in a fast and efficient manner resulting high manoeuvrabilities. The is composed of several bones dozens muscles, enabling it to have morphing abilities. However, various postures require complex control strategies, but no method or device has yet been designed. Therefore, an arm‐wing cooperative achieved for the first time current research. In method, similarities between human arm skeletal avian were figured out, then direct mapping motions was proposed established. A motion capture system utilized measure both wing. Thereafter, bionic skeleton designed controlled real‐time manner, which allows flap its just like bird. We guess that could be new future aircraft.

Язык: Английский

Процитировано

0
Size of the ulna and taxonomic order affect vane dimensions of secondary remiges in birds DOI Creative Commons
D. Charles Deeming,

E.P. Bayliss,

E. Ketley

и другие.

Avian Research, Год журнала: 2025, Номер unknown, С. 100245 - 100245

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
New information on the Hind limb feathering, soft tissues and skeleton of Microraptor (Theropoda: Dromaeosauridae) DOI Creative Commons

Matthieu Chotard,

Xiaoli Wang, Xiaoting Zheng

и другие.

BMC Ecology and Evolution, Год журнала: 2025, Номер 25(1)

Опубликована: Апрель 24, 2025

Abstract Background Microraptor is known as the most significant example of extended feathering on legs a paravian, both fossil and modern. Its striking difference with paravians contributes to multiple theories function its conspicuous hind limbs. Recent studies tried uncover evolutionary significance, but anatomy has only been described from small number samples. Results Through analysis 16 specimens , including 8 previously undescribed specimens, here we provide new information structure hindwing feathers within revised feather taxonomy, shape which displays all along limb, except pedal digits. Here describe in detail 6 types: metatarsal remiges, long coverts, femoral well first description tibial feathers, anterior coverts minor coverts. Our study BMNHC PH881 STM 5–5, 5–75, 6–62 6–86 partially consistent previous work, key this proximal shift triangular wing portion formed by that outlines joint between tibiotarsus metatarsus. This configuration does not exist any extant or bird, other non-avian paravian so far, underscoring uniqueness . Unlike reconstructions, display an asymmetrical close-vanned remiges. The preserved are posteriorly projected metatarsus vary medioposterior lateroposterior projection feathers. Conclusions overall layers found two elongated asymmetrically vaned linked more reminiscent forewing modern birds than leg fossils taxa. These observations allow us better understand flight, non-flight locomotion hunting strategies iconic ‘four-winged’ dinosaur suggesting had complex behaviour made it adapted arboreal terrestrial habitats.

Язык: Английский

Процитировано

0
Earliest evidence of avian primary feather moult DOI
Xiaoli Wang, Jingmai K. O’Connor, Xiaoting Zheng

и другие.

Biology Letters, Год журнала: 2024, Номер 20(7)

Опубликована: Июль 1, 2024

Feather moulting is a crucial process in the avian life cycle, which evolved to maintain plumage functionality. However, involves both energetic and functional costs. During moulting, function temporarily decreases between shedding of old feathers full growth new ones. In flying taxa, gradual sequential replacement flight aerodynamic capabilities during period. Little known about moult strategies non-avian pennaraptoran dinosaurs stem birds, before emergence crown lineage. Here, we report on two Early Cretaceous pygostylian birds from Yixian Formation (125 mya), probably referable Confuciusornithiformes, exhibiting morphological characteristics that suggest wing feathers. Short primary interpreted as immature are symmetrically present wings, typical among extant birds. Our survey enormous collection Tianyu Museum confirms previous findings evidence active non-neornithine pennaraptorans rare likely indicates cycle greater than one year. Documenting Mesozoic feathered critical for understanding their ecology, locomotor ability evolution this important life-history

Язык: Английский

Процитировано

2
Inferring aerial behavior in Mesozoic dinosaurs: Implications and uncertainties DOI
Xing Xu

Proceedings of the National Academy of Sciences, Год журнала: 2024, Номер 121(12)

Опубликована: Март 11, 2024

Язык: Английский

Процитировано

1
Birds, Diversification of DOI
Albert Chen, Marcel van Tuinen, Daniel J. Field

и другие.

Elsevier eBooks, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Язык: Английский

Процитировано

0
Enhanced flight performance and adaptive evolution of Mesozoic giant cicadas DOI Creative Commons
Chunpeng Xu, Jun Chen, Florian T. Muijres

и другие.

Science Advances, Год журнала: 2024, Номер 10(43)

Опубликована: Окт. 25, 2024

Insects have evolved diverse ecological flight behaviors and adaptations that played a key role in their large-scale evolutionary patterns. However, the evolution of performance is poorly understood because reconstructing abilities extinct insects highly challenging. Here, we propose an integrated approach to reveal Palaeontinidae (giant cicadas), Mesozoic arboreal insect clade with large bodies wings. Our analyses unveil faunal turnover from early late during latest Jurassic-earliest Cretaceous, accompanied by morphological adaptive shift remarkable improvement including increased speed enhanced maneuverability. The aerodynamic may been stimulated rise birds, supporting hypothesis aerial arms race (Air Race) between birds. results provide potential example predator-induced behavioral macroevolution contribute our understanding how powered has shaped animal evolution.

Язык: Английский

Процитировано

0
Dinosaur palaeoneurology: an evolving science DOI Creative Commons
Amy M. Balanoff

Biology Letters, Год журнала: 2024, Номер 20(12)

Опубликована: Дек. 1, 2024

Our fascination with dinosaur brains and their capabilities essentially began the first discovery. The history of this study is a useful reflection palaeoneurology as whole its relationship to more inclusive evolutionary neuroscience. I argue that imbued high heuristic potential, but one whose realization requires overcoming certain constraints. These constraints include need for stable phylogenetic framework, methods efficient precise endocast construction, fossil researchers who are steeped in neuroscience perspective. progress has already been made these areas sets stage mature palaeoneurology—not only capable being informed by discoveries drives such discoveries. draw from work on size, shape, behavioural correlates developmental role brain outline current advances palaeoneurology. My examples largely taken theropods centre questions related origin birds unique locomotory capabilities. hope, however, exemplify potential other groups, utilizing dinosaur–bird lineage parallel model par mammals studying encephalization.

Язык: Английский

Процитировано

0