Posts tagged with evolution

Science Live: Whalebirds – the mystery of the storm riders. Part 8. Prion evolution

  • Fossil bones of fairy prions are abundant in some South Island West Coast caves showing that the species nested there in huge numbers before humans brought rats to New Zealand.  Photo: Te Papa collections, Alan Tennyson
  • Alan Tennyson with a South Island Giant Moa leg bone. Photo © JC Stahl
  • The evolutionary history of prions is poorly understood but prions have been riding the winds of the southern oceans for at least the last 4 million years.  Photo: Fairy Prion, Philip Griffin, NZ Birds Online
  • The blue petrel is a close relative of prions but unlike prions it has a long narrow beak and a white, rather than black tip to its tail.  Photo: South Atlantic, David Boyle, NZ Birds Online

Here is the final instalment in our series of blogs all about prion biology! This is in preparation for our upcoming Science Live event on Oct 22nd (today!) at 1:50 pm NZ time when you can accompany us into the lab via live streaming (a permanent link to the YouTube video can be found below).  For… Read more »

Arthropteris climbing ferns

Arthropteris_tenella_climbing_reduced

I’m a co-author of a just-published scientific paper examining the evolution and classification of the Arthropteris climbing ferns. The paper was a real international collaboration, involving authors from China, Netherlands, France, United Kingdom, and New Zealand. It is unclear how many species there are of Arthropteris – probably somewhere between 10 and 20. They occur… Read more »