[Coral-List] the early cnidarian

[Douglas Fenner]

This is the precambrian cnidarian polyps that the popular article was
about which I posted earlier.

A crown-group cnidarian from the Edicarian of Charnwood Forest, U.K.
Nature Ecology & Evolution 6, 1095–1104 (2022)

https://www.nature.com/articles/s41559-022-01807-x

open=access

Abstract

Cnidarians are a disparate and ancient phylum, encompassing corals and
jellyfish, and occupy both the pelagic and benthic realms. They have a rich
fossil record from the Phanerozoic eon lending insight into the early
history of the group but, although cnidarians diverged from other animals
in the Precambrian period, their record from the Ediacaran period (635–542
million years ago) is controversial. Here, we describe a new fossil
cnidarian—*Auroralumina attenboroughii* gen. et sp. nov.—from the Ediacaran
of Charnwood Forest (557–562 million years ago) that shows two bifurcating
polyps enclosed in a rigid, polyhedral, organic skeleton with evidence of
simple, densely packed tentacles. *Auroralumina* displays a suite of
characters allying it to early medusozoans but shows others more typical of
Anthozoa. Phylogenetic analyses recover *Auroralumina* as a stem-group
medusozoan and, therefore, the oldest crown-group cnidarian.
*Auroralumina* demonstrates
both the establishment of the crown group of an animal phylum and the
fixation of its body plan tens of millions of years before the Cambrian
diversification of animal life.

--------------------------
The coral pathogen *Vibrio coralliilyticus* kills non-pathogenic holobiont
competitors by triggering prophage induction
https://www.nature.com/articles/s41559-022-01795-y
Cheers, Doug

-- 
Douglas Fenner
Lynker Technologies, LLC, Contractor
NOAA Fisheries Service
Pacific Islands Regional Office
Honolulu
and:
Coral Reef Consulting
PO Box 997390
Pago Pago, American Samoa 96799-6298  USA

A pass for polluting? Environmental groups, employees say EPA enforcement
efforts lacking
https://www.msn.com/en-us/news/us/a-pass-for-polluting-environmental-groups-employees-say-epa-enforcement-efforts-lacking/ar-AAXdYsL

1 in 6 deaths worldwide can be attributed to pollution, new review shows
https://www.msn.com/en-us/health/medical/1-in-6-deaths-worldwide-can-be-attributed-to-pollution-new-review-shows/ar-AAXozQh

UN: World on fast track to disaster, but we can avert it
https://www.youtube.com/watch?v=9xBVD8r0aHQ