Including Original "Paul H. Letters" Copyright © 1996-2014 Paul V. Heinrich - All rights reserved.



Sunday, 29 March 2015

Car-Size Amphibians Found Fossilised In Mass Grave ( Triassic Portugal )

Car-Size Amphibians Found Fossilised In Mass Grave ( Triassic Portugal )

Paleontologists Uncover “Super Salamander” Boneyard
by Brian Switek, National Geographic
http://phenomena.nationalgeographic.com/2015/03/25/paleontologists-uncover-super-salamander-boneyard/

'Monster salamanders' found in fossilised mass grave
BBC News, March 23, 2015‎
http://www.bbc.com/news/science-environment-32016625

Prehistoric super salamander was top predator, fossils
suggest, Phys.Org, ‎Mar 23, 2015‎
http://phys.org/news/2015-03-prehistoric-super-salamander-predator-fossils.html
https://www.sciencenews.org/article/fossil-monstrous-fish-eating-amphibian-unearthed
http://www.sci-news.com/paleontology/science-metoposaurus-algarvensis-fossils-giant-salamander-like-amphibian-portugal-02632.html

Brusatte, S. L., R. J. Butlerb, O. Mateusde, and
J. S. Steyerf, 2015, A new species of Metoposaurus
from the Late Triassic of Portugal and comments
on the systematics and biogeography of metoposaurid
temnospondyls. Journal of Vertebrate Paleontology.
Published online March 23, 2015.
doi: 10.1080/02724634.2014.912988
http://www.tandfonline.com/doi/abs/10.1080/02724634.2014.912988

Yours,

Paul H.

Saturday, 28 March 2015

Paleohydrology of the Jezero Crater Paleolake System, Mars

Paleohydrology of the Jezero Crater Paleolake System, Mars

Ancient Martian lake system records two water-related events
Kevin Stacey, Brown University, March 25, 2015
https://news.brown.edu/articles/2015/03/jezero
http://www.eurekalert.org/pub_releases/2015-03/bu-aml032515.php

Goudge, T. A., J. F. Mustard, J. W. Head, C. I. Fassett, and S. M.
Wiseman, 2015, Assessing the Mineralogy of the Watershed and
Fan Deposits of the Jezero Crater Paleolake System, Mars.
Journal of Geophysical Research: Planets Accepted Article
http://onlinelibrary.wiley.com/doi/10.1002/2014JE004782/abstract
http://onlinelibrary.wiley.com/enhanced/doi/10.1002/2014JE004782/

Jezero Crater Lake: Phyllosilicate-bearing sediments
http://marsoweb.nas.nasa.gov/landingsites/msl/workshops/2nd_workshop/talks/Fassett_Nili.pdf

Yours,

Paul H.

Wednesday, 25 March 2015

Winning Ideas for Origin of Mysterious Cambrian (Bedding Plane) Circles of Wisconsin

Winning Ideas for Origin of Mysterious Cambrian (Bedding Plane) Circles of Wisconsin

Reddit helps scientists devise theories for mysterious ring
shaped fossils by Sanden Totten, KPPC, March 18 2015
http://www.scpr.org/news/2015/03/18/50433/reddit-helps-scientists-devise-theories-for-myster/

Winner Announcement !! http://ringmaster.cs.ucr.edu/Rings3.html

Sourcing the Ring Master: http://ringmaster.cs.ucr.edu/Rings.html

Yours,

Paul H.

The Meaning of Meteorites (Learning to Love the Dreaded Thunderstones)

The Meaning of Meteorites (Learning to Love the Dreaded Thunderstones)

Another Geological Society of London lecture about meteorites is:

The Meaning of Meteorites 
(Or why we should stop worrying and 
learn to love the dreaded thunderstone)
by Dr Ted Nield, Geological Society, 
Burlington House, Piccadilly, London, W1J 0BG
https://www.youtube.com/watch?v=SuYKYRHMq4U

More about Dr. Ted Neil at
http://www.geolsoc.org.uk/~/media/shared/documents/specialist%20and%20regional%20groups/southernwales/Incoming%20Learning%20to%20love%20the%20meteorite.ashx

Yours,

Paul H,

Tuesday, 24 March 2015

New, 124 miles in Diameter, Lunar Crater Discovered

New, 124 miles in Diameter, Lunar Crater Discovered

New lunar crater named after aviation pioneer Earhart
by Paul Rincon, BBC News, March 17. 2015
http://www.bbc.com/news/science-environment-31917302

Hidden Moon Crater Named After Amelia Earhart
by Ian O,Neill, Discovery, March 17, 2015
http://news.discovery.com/space/hidden-moon-crater-named-after-amelia-earhart-150317.htm

Why did researchers decide to name enormous moon
crater after Amelia Earhart? by Andrew McDonald,
The Space Reporter, March 17, 2015
http://thespacereporter.com/2015/03/why-did-researchers-decide-to-name-enormous-moon-crater-after-amelia-earhart/

Yours,

Paul H.

Using Kites to Gather Data for Martian Study

Using Kites to Gather Data for Martian Study

Kites over Kilauea aid Arizona scientists studying
Martian geology, Star-Advertiser staff, March 21, 2015
http://www.staradvertiser.com/news/breaking/20150321_Kites_over_Kilauea_aid_Arizona_scientists_studying_Martian_geology.html

Yours,

Paul H.

Sunday, 22 March 2015

Geology in Space: Meteorites and Cosmic Dust

Geology in Space: Meteorites and Cosmic Dust

A rather nice Geological Society of London lecture is:

Geology in Space: Meteorites and Cosmic Dust
Geology no longer is the study of the Earth. Rocks
are found throughout the universe on other planets,
asteroids and comets and as debris ranging in size
down to the tiniest pieces of stardust, Matthew Genge
Imperial College, London. Geological Society of London
https://www.youtube.com/watch?v=OMTl5fY4QW4

Although off-topic, the below lecture is also worthwhile.

Exceptionally Preserved Fossils: Windows on the ‬
Evolution of Life‬, GeologicalSociety, March's Shell
London lecture, delivered by David Siveter,
University of Leicester) at the Geological Society
https://www.youtube.com/watch?v=IDm4yYaAvZM

Yours,

Paul H.

Saturday, 21 March 2015

Extent of Moon's Giant Volcanic Eruption is Revealed

Extent of Moon's Giant Volcanic Eruption is Revealed

Extent of moon's giant volcanic eruption is revealed
Durham University, Science Daily, March 18, 2015
http://www.sciencedaily.com/releases/2015/03/150318101236.htm
https://www.dur.ac.uk/news/newsitem/?itemno=24111

Wilson, J. T., V. R. Eke, R. J. Massey, R. C. Elphic,
B. L. Jolliff, D. J. Lawrence, E. W. Llewellin, J. N.
McElwaine, andL. F. A. Teodoro, in press,
Evidence for explosive silicic volcanism on the Moon
from the extended distribution of thorium near the
Compton-Belkovich Volcanic Complex. Astrophysics,
Earth and Planetary Astrophysics.
http://dro.dur.ac.uk/14040/
http://onlinelibrary.wiley.com/doi/10.1002/2014JE004719/abstract;jsessionid=02443213C9D35B7548AA77A84BE49CC6.f03t04

Unique volcanic complex discovered on Moon's far side
Washington University in St. Louis, Science Daily
http://www.sciencedaily.com/releases/2011/07/110725091730.htm

Yours,

Paul H.

Friday, 13 March 2015

Public Fossil Digs in North Dakota

Public Fossil Digs in North Dakota

Public welcome to search for fossils at North Dakota digs
Eloise Ogden, Bismark Tribune / The Associated Press
http://bismarcktribune.com/news/state-and-regional/public-welcome-to-search-for-fossils-at-north-dakota-digs/article_8fa030b2-5661-53f6-8bbd-62462b1ea5eb.html

North Dakota Geological Survey Paleontology Fossil
Digs Program, North Dakota Geological Survey
https://www.dmr.nd.gov/ndfossil/digs/digs.asp

Yours,

Paul H.

Thursday, 12 March 2015

Giant ( Two-Meter ) Ordovician Anomalocaridid Found In Morocco

Giant ( Two-Meter ) Ordovician Anomalocaridid Found In Morocco

Giant Ocean Arthropod Rivals Largest in History
By Ross Pomeroy, Real Clear Science, March 2015
http://www.realclearscience.com/journal_club/2015/03/11/giant_ocean_arthropod_rivals_largest_in_history_109127.html

Fossilised remains of human-sized 'lobster'
discovered in Morocco (The newly discovered
prehistoric species, named Aegirocassis benmoulae,
was an early ancestor of the modern spider and
the oldest giant filter-feeder on record.
The Guardian, March 11, 2015
http://www.theguardian.com/science/2015/mar/11/fossilised-remains-of-human-sized-lobster-discovered-in-morocco

Frankensquid creature roamed seas 480m years
ago, PhysOrg, March 11, 2015,
http://phys.org/news/2015-03-frankensquid-creature-roamed-seas-480m.html

Aegirocassis benmoulae, Yale Peabody Museum
of Natural History, YouTibe, March 11, 2015
(A presentation by Dr. Peter Van Roy describing a
new fossil anomalocaridid from the Early Ordovician
Fezouata Formation of Morocco. Dr. Van Roy is
one of the authors of a new study that has shed
light on the early evolution and development of
arthropod limbs.)
https://www.youtube.com/watch?v=6KoqAA-RRnc

The paper is:

Van Roy, P., A. C. Daley, and D. E. G. Briggs.
Anomalocaridid trunk limb homology revealed
by a giant filter-feeder with paired flaps.
Nature. 2015. doi:10.1038/nature14256
http://www.nature.com/nature/journal/vaop/ncurrent/full/nature14256.html

Yours,

Paul H.

Sunday, 8 March 2015

Online Lectures on Permian and Other Mass Extinctions

Online Lectures on Permian and Other Mass Extinctions

Beauchamp, B. (University of Calgary), 2013, Permian –
Triassic Mayhem: Lead-up, Catastrophe and Aftermath
of the Earths Largest Mass Extinction viewed from
Arctic Canada Royal Tyrrell Museum Spealer Series 2013
Published on Feb 11, 2013
https://www.youtube.com/watch?v=J8rynQqg9x8

‪ Ward, Peter, 2013, Our Future In a World Without Ice Caps‬.
Brown Bag Lecture Series; Center for Student Engagement
& Leadership; and Arts, Culture, and Civic Engagement,
Edmonds Community College, Lynnwood, Washington.
https://www.youtube.com/watch?v=HtHlsUDVVy0

Yours,

Paul H.

Thursday, 5 March 2015

Crowdfunding meteorite searching in the Australian Nullarbor Plain

Crowdfunding meteorite searching in the Australian Nullarbor Plain

In “[meteorite-list] Crowdfunding meteorite searching in
the Nullarbor Plain” on March 3, 2015, Robin Whittle wrote:

“Here is an article about Australian researchers who
no longer can get government funding, and so are
turning to crowdfunding to support their expeditions.
They claim to have found more than 20% of Australia's
recorded meteorites.

http://www.abc.net.au/news/2015-03-03/meteorite-hunting-scientists-inundated-with-public-support/6269762

Another article is “Crowd-funding and meteorite
hunting – a success story!” at
http://oncirculation.com/2015/03/03/crowd-funding-and-meteorite-hunting-a-success-story/

Robin continued;

“My wife Tina and I visited the coastal part of the
Nullarbor Plain in the winter of 2010. It is a limestone
surface which was a sea bed roughly 12 million years
old, according to the "middle Miocene" description at:

http://en.wikipedia.org/wiki/Nullarbor_Plain

A PDF file that summarizes the geology of the
Nullarbor Plain is:

Webb, J., 2002, Nullarbor Field Trip Excursion
Guide.10th Australia and New Zealand
Geomorphology Group Conference September-
October 2002, Department of Earth Sciences,
La Trobe University, Victoria 3086
http://www.anzgg.org/scanned-publications
http://www.anzgg.org/ANZGG%2010%202002%20Nullarbor%20fieldtrip.pdf

The limestone deposits underlying the Nullarbor Plain
represent four periods of innudation. The first was in
middle-late Eocene. At this time, almost the entire
Nullarbor Plain was covered by relatively quiet, shallow,
and cool marine waters in which up to 300 meters of
limestone (Wilson Bluff Limestone) accumulated. In the
early Oligocene, the marine waters completely retreated
and later return during the late Oligocene. Between late
Oligocene to early Miocene, about 100 meters of
Abrakurrie Limestone accumulated. Then marine waters
briefly retreated and exposed the Nullarbor Plain again
at the end of the early Miocene. Later during both the
early Miocene and middle Miocene, the Nullarbor Plain
was twice innudated and less than 20 meters of
Nullarbor Limestone accumulated over much of the
Nullarbor Plain. The marine waters finally retreated
about 14 million years ago and the Nullarbor Plain has
been high, dry, and accumulating meteorites for the
past 14 million years.

Go see:

Drexel, J. F., and W. V. Preiss, eds., 1995, The
geology of South Australia. Volume 2, The
Phanerozoic: Geological Survey of South
Australia Bulletin. vol. 54, 347 p.

Yours,

Paul H.

Saturday, 28 February 2015

Controversy About Naturally Occuring Asbestos, Clark and Nye Counties, Nevada

Controversy About Naturally Occuring Asbestos, Clark and Nye Counties, Nevada

People hunting meteorites in southern Nevada should read
the below article in the March Earth Magazine. it is;

Pratt, S. E., 2015, Asbestos found in Nevada and
Arizona: Roadblock and potential health hazard?
Earth Magazine. vol. 60, no. 3, pp. 32-39.
http://www.earthmagazine.org/article/asbestos-found-nevada-and-arizona-roadblock-and-potential-health-hazard

Other articles are:

In Nevada, a Controversy in the Wind by Deborah
Blum, New York Times, 9, 2015
http://www.nytimes.com/2015/02/10/science/a-controversy-in-the-wind.html

Asbestos controversy blows in Nevada wind
The Seattle Times-Feb 22, 2015
http://www.seattletimes.com/news/asbestos-controversy-blows-in-nevada-wind/

Rare cancer found in Nevada likely caused by asbestos
in nature, UH System Current News,February 12, 2015
http://www.hawaii.edu/news/2015/02/12/rare-cancer-found-in-nevada-likely-caused-by-asbestos-in-nature/

Mesothelioma in southern Nevada likely result of asbestos
in environment. International Association for the Study of
Lung Cancer, Science Daily, February 10, 2015
http://www.sciencedaily.com/releases/2015/02/150210155940.htm

The paper is:

Baumann, F., B. J. Buck, R. V. Metcalf, B. T. McLaurin,
D. Merkler, and M. Carbone, 2015, The presence of
asbestos in the natural environment is likely related to
mesothelioma in young individuals and women from
Southern Nevada. Journal of Thoracic Oncology.
Post Acceptance: February 7, 2015
doi: 10.1097/JTO.0000000000000506
http://journals.lww.com/jto/Abstract/publishahead/The_presence_of_asbestos_in_the_natural.98978.aspx
http://www.ncbi.nlm.nih.gov/pubmed/25668121

yours,

Paul H.

Friday, 27 February 2015

Scientists find four new enormous holes in northern Russia

Scientists find four new enormous holes in northern Russia

Dozens of new craters suspected in northern Russia
By Anna Liesowska, Siberian Times, February 2015
http://siberiantimes.com/science/casestudy/news/n0127-dozens-of-mysterious-new-craters-suspected-in-northern-russia/

Scientists find four new enormous holes in northern Russia
by Will Stewart, Daily Mail, February 23, 2015
http://www.dailymail.co.uk/sciencetech/article-2965385/Are-Siberia-s-mysterious-craters-caused-climate-change-Scientists-four-new-enormous-holes-northern-Russia.html

The Siberian crater saga is more widespread — and scarier
— than anyone thought, the Washington Post, Feb 26, 2105
http://www.washingtonpost.com/news/morning-mix/wp/2015/02/26/the-siberian-crater-problem-is-more-widespread-and-scarier-than-anyone-thought/

Yours,

Paul H.



Thursday, 26 February 2015

Lecture on Meteorites -Royal Tyrrell Museum

Lecture on Meteorites -Royal Tyrrell Museum

The Royal Tyrrell Museum has some really nice
lecturs online. One of them about meteorites is:

Amy Riches, University of Alberta, Messages from
Meteorites: The Growth of Planets & The Delivery
of Possible Seeds of Life. Royal Tyrrell Museum
Royal Tyrrell Museum Speaker Series 2015
https://www.youtube.com/watch?v=7DtlZCF6ljw

Also, a 2012 lecture about terminal Pleistocene
extinctions is

Gary Haynes, Late Pleistocene megafaunal
extinctions and the unsettled timing of the first
human dispersals into North America. Royal
Tyrrell Museum Speaker Series 2015
https://www.youtube.com/watch?v=8WZ5Q2JYbLY

Gray Haynes mentions briefly the use of fossils
of Sporormiella spp. to estimate the ages of
meagfauna extinctions in his lecture. How this is
done is discussed in:

Gill, J. L., J. W. Williams, S. T. Jackson, K. Lininger,
and G. S. Robinson, 2009, Pleistocene megafaunal
collapse preceded novel plant communities and enhanced
fire regimes," Science, vol.326, pp. 1100-1103.
http://www.geography.wisc.edu/faculty/williams/lab/Publications.html
https://www.frames.gov/rcs/ttrs/24000/24499.html
http://www.sciencemag.org/content/326/5956/1100.full

Gill et al. (2009) found that " Megafaunal populations
collapsed from 14,800 to 13,700 years ago, well before
the final extinctions and during the Bolling-Allerod
warm period.

Burney, D. A., G. S. Robinson, and L. P. Burney,
2003, Sporormiella and the late Holocene extinctions
in Madagascar. Proceedings of the National
Academy of Science of the United States of America.
vol. 100, no. 19, pp. 10800–10805, article 1534700100
http://www.pnas.org/content/100/19/10800.abstract

Mass Animal Extinctions, Not Climate Change,
Caused Major Shifts in Plant Communities, NFS
http://www.nsf.gov/awardsearch/showAward?AWD_ID=0716471
https://www.nsf.gov/mobile/discoveries/disc_summ.jsp?cntn_id=116971&org=NSF

Yours,

Paul H.



Deccan Traps ....

Deccan Traps ....

Alan Silverstein <ajs at frii.com> in “Deccan traps ....” at
http://lists.drizzle.com/pipermail/rockhounds_lists.drizzle.com/2015-February/003399.html
wrote:

>It seems that somewhere I read that the Deccan
>Traps lava flows might have been caused by the
>impact of the giant meteor called the Chicxulub impact...

>Apparently not so. Recent news:

http://www.sci-news.com/geology/science-deccan-traps-volcanism-dinosaur-extinction-02345.html

>"Their results, published in the journal Science,
>show that the eruption began 250,000 years
>before the Chicxulub asteroid strike (66 million
>years ago) and continued for 500,000 years
>after the impact..."

Although the Deccan traps started erupting prior
to the Chicxulub asteroid impact, it has been
proposed that the Chicxulub asteroid impact
resulted in cataclysmic eruptions of the already
active, but relatively sluggish, Deccan trap fissure
eruptions. Go seee;

Extraterrestrial impact in Yucatán, lava floods
& Cretaceous-Tertiary extinction, Mark Richards
University of Berkeley (former dean at Berkeley)
https://www.youtube.com/watch?v=LiFF04rOq3Y

(The talk starts about 8 minutes into the video)

Richards, M., W. Alvarez, S. Self, L. Karlstrom,
P. Renne, M. Manga, and C. Sprain, 2014, Possible
Triggering of the Largest Deccan Eruptions by
the Chicxulub Impact. Geophysical Research
Abstracts, vol. 16, number, EGU2014-3042
http://meetingorganizer.copernicus.org/EGU2014/EGU2014-3042.pdf

Yours,

Paul H.

Online Lecture About Late Pleistocene Megafaunal Extinctions

Online Lecture About Late Pleistocene Megafaunal Extinctions

There is a 2012 Tyrrell Museum Speaker Series lecture
about terminal Pleistocene extinctions on Youtube. It is:

Gary Hanes, Late Pleistocene megafaunal
extinctions and the unsettled timing of the first
human dispersals into North America. Royal
Tyrrell Museum Speaker Series 2015
https://www.youtube.com/watch?v=8WZ5Q2JYbLY

Gray Hanes mentions briefly the use of Sporormiella
spp. microfossils to estimate the age of megafauna
extinctions in his lecture. How this is done is discussed in:

Gill, J. L., J. W. Williams, S. T. Jackson, K. Lininger,
and G. S. Robinson, 2009, Pleistocene megafaunal
collapse preceded novel plant communities and enhanced
fire regimes," Science, vol.326, pp. 1100-1103.
http://www.geography.wisc.edu/faculty/williams/lab/Publications.html
https://www.frames.gov/rcs/ttrs/24000/24499.html
http://www.sciencemag.org/content/326/5956/1100.full

Gill et al. (2009) found that " Megafaunal populations
collapsed from 14,800 to 13,700 years ago, well before
the final extinctions and during the Bolling-Allerod
warm period.

Burney, D. A., G. S. Robinson, and L. P. Burney,
2003, Sporormiella and the late Holocene extinctions
in Madagascar. Proceedings of the National
Academy of Science of the United States of America.
vol. 100, no. 19, pp. 10800–10805, article 1534700100
http://www.pnas.org/content/100/19/10800.abstract

Mass Animal Extinctions, Not Climate Change,
Caused Major Shifts in Plant Communities, NFS
http://www.nsf.gov/awardsearch/showAward?AWD_ID=0716471
https://www.nsf.gov/mobile/discoveries/disc_summ.jsp?cntn_id=116971&org=NSF

The Royal Tyrrell Museum also has a really nice
online lecture about meteorites. It is;

Amy Riches, University of Alberta, Messages from
Meteorites: The Growth of Planets & The Delivery
of Possible Seeds of Life. Royal Tyrrell Museum
Royal Tyrrell Museum Speaker Series 2015

https://www.youtube.com/watch?v=7DtlZCF6ljw

Yours,

Paul H.

Friday, 20 February 2015

An Explanation for The Mysterious Cambrian Rings of Wisconsin Sought

An Explanation for The Mysterious Cambrian Rings of Wisconsin Sought

Sourcing the Ring Master: $500 Cash prize for the best natural explanation for curious rings on an
ancient seabed! University of California, Riverside
http://ringmaster.cs.ucr.edu/Rings.html

Knauss, M. J., A. Tyler, and N. C. Hughes, 2014,
Late Cambrian enigmatic ring structures from southwestern Wisconsin, USA. 2014 GSA Annual
Meeting in Vancouver, British Columbia (19–22 October 2014)
https://gsa.confex.com/gsa/2014AM/finalprogram/abstract_243821.htm
http://www.researchgate.net/profile/Mathew_Knauss/publications

Yours,

Paul H.

Blue Amber – was "Great Articles About Fake Amber…"

Blue Amber – was "Great Articles About Fake Amber…"

In "[Rockhounds] Great Articles About Fake Amber
and the "Piltdown Fly" at
http://lists.drizzle.com/pipermail/rockhounds_lists.drizzle.com/2015-February/003416.html
Axel wrote:

"Indeed Don, amber from the Santiago Mine, Dominican
Republic, fluoresces blue. It is somewhat paler yellow than
the average amber in normal light, but still quite yellow."

A study was done oif the "blue amber" by Bellani et al.
(2005). They concluded that "perylene is by far the most
probable candidate for fluorescence in blue Dominican
amber." They noted that perylene is commonly found in
marine, lake, and river sediments and likely originates
from the anaerobic diagenesis of organic matter of still
unknown character.

Bellani, V., E. Giulotto, L. Linati, and D. Sacchi, 2005,
Origin of the blue fluorescence in Dominican amber.
Journal of Applied Physics. vol. 97, article no. 016101.
http://scitation.aip.org/content/aip/journal/jap/97/1/10.1063/1.1829395

Blue amber, Wikipedia
http://en.wikipedia.org/wiki/Blue_amber

Yours,

Paul H.

Thursday, 19 February 2015

Online Papers - Russian Ediacaran fossils and Ordovician Trilobites

Online Papers - Russian Ediacaran fossils and Ordovician Trilobites

A Guidebook and picture book about Russian Ediacaran fossils include,

Leonov, M. V. , A.Yu. Ivantsov, and M. A. Zakrevskaya,
2008, Guidebook of the field paleontological excursion:
Zimnie Gory - locality of the Vendian (Ediacaran)
soft-bodied animals. PIN RAS, Moscow, 27 pp.
https://www.academia.edu/2393693/Guidebook_of_the_field_paleontological_excursion_Zimnie_Gory_-_locality_of_the_Vendian_Ediacaran_soft-bodied_animals
https://paleo.academia.edu/AndreyIvantsov
https://www.academia.edu/Documents/in/Ediacaran

Ivantsov, A. Yu., and M. V. Leonov, 2008, The imprints
of Vendian animals - unique paleontological objects of
the Arkhangelsk region. (ОТПЕЧАТКИ ВЕНДСКИХ
ЖИВОТНЫХ — уникальные палеонтологические
объекты Архангельской области. Arkhangel, 92 pp.
https://www.academia.edu/2355930/The_imprints_of_Vendian_animals_-_unique_paleontological_objects_of_the_Arkhangelsk_region
https://paleo.academia.edu/AndreyIvantsov
https://www.academia.edu/Documents/in/Ediacaran

Ordovician Trilobites

Ivantsov, A. Yu., 2002, Ordovician Trilobites of the Subfamily
Asaphinae of the Ladoga Glint. Paleontological Journal, vol. 3,
Supplement no. 3, pp. S229-S337.
https://www.academia.edu/2353004/Ordovician_Trilobites_of_the_Subfamily_Asaphinae_of_the_Ladoga_Glint
https://paleo.academia.edu/AndreyIvantsov

Yours,
Paul H.