the community site for and by developmental biologists

About: nelas

Biography:
I'm interested in the development and evolution of marine invertebrates.
Website:
http://organelas.com/

Posts by nelas:

Turtles in a nutshell

Posted by on September 7th, 2011

Turtles are peculiar vertebrates. They have a compact skull with no temporal openings, a beak instead of teeth, a contractible neck, and a shell covering its trunk. The famous turtle shell is composed of two halves, a plastron (ventral) and a carapace (dorsal). The latter is an exquisite arrangement of vertebrae and fan-shaped ribs with[…]

Echinoderm development on film

Posted by on December 6th, 2010

“I also here salute the echinoderms as a noble group especially designed to puzzle the zoologist.” Libbie Hyman, 1955 Echinoderms are fascinating creatures. They have extensive regenerative capabilities, a mutable connective tissue that dynamically (and deliberately) changes its stiffness, and a complex system of hydraulic canals involved in the circulation of internal fluids and locomotion.[…]