Navigation Links
New discoveries in North America's Great Plains bring ammonites to life
Date:10/13/2010

man.

At one locality in South Dakota, the fossilized methane seeps are exposed on the side of a steep cliff of black rock. Landman and his team criss-crossed the cliff with bright white ropes, forming a grid-like pattern onto which the team mapped the distribution of fossils.

"The result looked like an enormous Christo installation," says Landman. "You have to imagine the underwater scene 70 million years ago: a cloud of zooplankton, with ammonites flocking to the vents, forming isolated communities surrounded by the muddy sea floor. Because the sedimentation rates in the seaway were so rapid, the ammonites and other organisms were buried quickly after death, preserving exquisite details of their morphology."

The new research, published in the Bulletin of the American Museum of Natural History, redescribes the type specimens (holotypes) of two of the most common ammonite species that lived at the time: Hoploscaphites nodosus and H. brevis. The original specimens were collected over 150 years ago from what is probably South Dakota. Hoploscaphites nodosus, previously Jeletzkytes nodosus, is reassigned to Hoploscaphites because new, large fossil collections show that the traditional separation of robust, coarsely ornamented specimens from more slender, finely ornamented specimens is arbitrary. The paper also helps reconstruct the paleogeography of the epicontinetal sea that covered North America at the time as well as other seaways that covered parts of Europe.

Landman and colleagues argue that these ammonites were probably not fast swimmers. They lacked strong muscles which would have been required for strong propulsion. In addition, their jaws could only accommodate small prey and, as a result, they were probably sluggish filter feeders. Many of the ammonites also show injuries. Some of the injuries were healed during life but others resulted in death. Landman argues that the predators we
'/>"/>

Contact: Kristin Elise Phillips
kphillips@amnh.org
212-496-3419
American Museum of Natural History
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Nanoparticle scientist speaks on new discoveries at Goldschmidt Conference
2. Charles Drew University researcher will be honored for discoveries
3. Society of Interventional Radiology highlights medical advances, new discoveries
4. New discoveries could improve climate projections
5. UCR plant scientists research spawns new discoveries showing how crops survive drought
6. Partnership to accelerate Trudeau Institute discoveries to patient care
7. MSU discoveries upend traditional thinking about how plants make certain compounds
8. Field stations foster serendipitous discoveries in environmental, biological sciences
9. UC and partners awarded $23 million to transform discoveries into real-world health solutions
10. Industry to Demonstrate Off-the-Shelf Integrated Force Protection and Counter-Terrorism Solutions at Northern Virginia Site
11. TERMIS-North America announces speakers for annual event
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New discoveries in North America's Great Plains bring ammonites to life
(Date:8/17/2015)... Conn. , Aug. 17, 2015  NXT-ID, Inc. ... biometric authentication company focused on the growing mobile commerce ... its new sales campaign for Q4 2015. The new ... marketing team consisting of Amplitude Marketing Group ( http://amplitudemarketing.com/ ... Marketing Group is a leader in retail driven marketing ...
(Date:8/12/2015)... , Aug. 12, 2015  Synaptics Inc. (NASDAQ: ... interface solutions, today announced that four of its ... solution, have officially been named FIDO Certified™ by ... of the certification, Synaptics, Natural ID™ fingerprint solutions ... Authentication Framework (UAF) standard and are interoperable among ...
(Date:8/6/2015)... 2015  Today, U.S. Congressman Mike Honda ... to learn firsthand how Silicon Valley technologies can ... a world leader in multi-factor identity management and ... federal agencies and commercial organizations achieve new levels ... "The vast majority of network breaches can be ...
Breaking Biology News(10 mins):NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 2NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 3Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 3Rep. Honda to Visit Crossmatch in Redwood City 2
... The Sixth Annual Sue Kim Hanson Lecture in Immunology on ... in honor of Sue Kim Hanson, MA, PhD 02, a ... with her husband and daughter, were passengers on United Airline ... Center on September 11, 2001. The lecture titled, Mechanisms ...
... Fisheries Service, has reported in an online scientific journal ... River dolphin, or baiji, during a six-week survey in ... extinct due to fishing and commercial development, which would ... of human activity. The research paper, published ...
... 2007)While the wily coyote reigns as top dog in much ... coexists with its larger relative, the wolf, according to a ... densities are more than 30 percent lower in areas that ... most recent edition of the Journal of Animal Ecology, details ...
Cached Biology News:Lecture to honor victim of Sept. 11 tragedy 2Scientists fear rare dolphin driven to extinction by human activities 2Who's afraid of the big, bad wolf? Coyotes 2
(Date:9/2/2015)... 2, 2015 Axovant Sciences Ltd. (NYSE:  AXON), a ... today announced upcoming presentations at three investor conferences: ... 2015 Healthcare Conference in New York ... 10 at 2:00 PM at the BioCentury NewsMakers Conference in ... Hotel & Conference Center , Thursday, September 17 at ...
(Date:9/2/2015)... , Sep. 02, 2015 ... has announced the addition of Jain PharmaBiotech,s new ... and Companies" to their offering. ... based on technologies and applications. The report starts ... for estimation of markets. Technologies include array comparative ...
(Date:9/2/2015)... Research and ... addition of Jain PharmaBiotech,s new report ... to their offering. The scope ... in situ hybridization (FISH), comparative genomic hybridization ... application of nanobiotechnology, microarrays, real-time polymerase chain ...
(Date:9/2/2015)... Sept. 2, 2015 Australian prostate cancer technology ... Australian science prize recognising ,outstanding, science that uses its ... globally launch a novel prostate cancer diagnostic test known ... level consortium taking out the peer-reviewed Australian Museum Eureka ... This prize is awarded for ground ...
Breaking Biology Technology:Axovant Sciences To Present At Upcoming Investor Conferences 2Axovant Sciences To Present At Upcoming Investor Conferences 3Global Biochips and Microarrays Technologies, Markets and Companies Report 2015 with Market Size in 2014 and Projected Value for the Years 2019 and 2024 2Global Cytogenetics Technologies Study 2015-2025 - Latest Markets and Companies Analysis 2Global Cytogenetics Technologies Study 2015-2025 - Latest Markets and Companies Analysis 3Prostate Cancer Company Minomic Wins Prestigious Eureka Science Prize 2Prostate Cancer Company Minomic Wins Prestigious Eureka Science Prize 3
... Inc. (NASDAQ: VSGN ; TSX:VAS) today reported the results ... All dollar amounts referenced herein are in Canadian dollars unless ... cash equivalents totaled $8.6 million, compared with $23.5 million at ... As of January 31, 2009, our cash balance was $8.5 ...
... fast-acting(1) combination treatment option for millions of Americans ... AstraZeneca (NYSE: AZN ) ... Administration (FDA) has approved SYMBICORT (budesonide/formoterol fumarate dihydrate) ... of airflow obstruction in patients with chronic obstructive ...
... Arkion(R) Life Sciences has received a Section 18 Crisis ... effective March 1, 2009. The EPA approval means that ... sweet corn from marauding blackbirds and grackles for the ... applied to corn seed before planting and effectively stops ...
Cached Biology Technology:Vasogen Announces 2008 Year-End Results 2Vasogen Announces 2008 Year-End Results 3Vasogen Announces 2008 Year-End Results 4Vasogen Announces 2008 Year-End Results 5Vasogen Announces 2008 Year-End Results 6Vasogen Announces 2008 Year-End Results 7Vasogen Announces 2008 Year-End Results 8Vasogen Announces 2008 Year-End Results 9Vasogen Announces 2008 Year-End Results 10Vasogen Announces 2008 Year-End Results 11FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 2FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 3FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 4FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 5FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 6Crisis Exemption Granted to Market Avipel(R) Corn Seed Treatment in Louisiana 2