Oxygen-free metabolism in the bird inner retina supported by the pecten - Nature While the photoreceptor outer segments in the bird outer retina have access to oxygen, the inner retina operates under chronic anoxia, supported by anaerobic glycolysis in the retinal neurons.

www.nature.com/articles/s41...

Sharks come in many different shapes and sizes. But they all follow a centuries-old mathematical rule A new study proves for the first time that the ‘two-thirds scaling law’ applies to large animals as well as small ones, offering key lessons for conversation.

Sharks come in many different shapes and sizes. But they all follow a centuries-old mathematical rule
theconversation.com/sharks-come-...

Earliest short-tailed bird from the Late Jurassic of China - Nature Two recently discovered bird fossils from the Late Jurassic Zhenghe Fauna demonstrate that highly derived bird-like features and the origin of birds appeared much earlier in the Jurassic period than p...

www.nature.com/articles/s41...

Heterochrony and Oophagy Underlie the Evolution of Giant Filter‐Feeding Lamniform Sharks Retention of juvenile craniofacial characteristics by paedomorphosis (heterochrony) may have facilitated the evolution of gigantism in filter-feeding lamniform sharks, by increasing the efficiency of....

New 📑
Evolution & Development - craniofacial adaptations for oophagy in embryonic lamniform #sharks - retained in adults, drives gigantism in filter-feeders like whale & basking sharks 🦈 Testing heterochrony hypothesis 🔗 onlinelibrary.wiley.com/doi/10.1111/...

#evolution
#Gigantism #MarineBiology

Colour variants of Yellowtail Rockfish (Sebastes flavidus) captured off the west coast of Vancouver Island