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Item #5: Posted Tuesday, September 21, 2004
Name: Ben Dattilo
Subject: Strophomenids found in a vertical position, hingeline down.
I recently described a slab containing 20 specimens of Sowerbyella rugosa
from northern Kentucky between Cincinnati and Maysville. What was unusual about
these slabs was that the brachiopods were situated vertically in the sediment,
hinge-line down, unsupported by their neighbors. There is no way around the
conclusion that the brachiopods got themselves into this unlikely position, so
it represents some sort of life or escape position.
This is important because strophomenids were not supposed to have pedicles
and should not have been able to move much at all, much less orient themselves
vertically. Now that I have documented this behavior in Sowerbyella, I would
like to document it in other similar dish-shaped or related brachiopods (strophomenids)
like Rafinesquina, Strophomena, Leptaena, etc.
I believe that there are such specimens out there, because in 1929 a similar
report was made: specimens of Rafinesquina minnesotaensis were found in the
sediment, oriented vertically, with the hinge-line down. These are not the “shingled”
Rafinesquina where each individual is leaning on its neighbor, but individuals
that are separated from each other. Apparently nobody paid any attention to this
early paper, and I have been unable to relocate the specimens.
My guess is that such specimens would only be found under conditions of rapid
burial by silt or mud. The same conditions would tend to preserve whole
trilobites and articulated crinoids. Preferably the specimens would not be
cleaned, as I would get the most information by sectioning them in their
Cross section through two specimens of Sowerbyella rugosa showing vertical
position and disturbed sediments.
Drawing from earlier report (Sardeson, 1929) showing Rafinesquina in a similar
IF YOU HAVE ANY SPECIMENS FITTING THIS DESCRIPTION, PLEASE
Benjamin F. Dattilo
University of Nevada Las Vegas
Las Vegas, NV 89154-4010
Phone: 702-895-1753 (Changed!)
Item #4: Posted Monday, January 19, 2004
Name: Mark Erickson
Subject: In situ colonies of ramose Bryozoa
I am interested to learn of sites at which I may study and collect
well-developed ramose bryozoan colonies, preferably attached to their original
dwelling substrate and encased in shale. Transported colonies preserved in shale
are also of interest. Colonies should be substantial in size -- 25-30 cm and
upward in height -- in order to have reached sufficient age to be useful for
functional morphologic and taphonomic study.
Site information will be confidential within the limits of scientific
disclosure. Collection and preparation will be necessary, but I would prefer to
do these myself or that it be done in presence of me or my colleagues.
Colonies already collected and reconstructed are of interest if stratigraphic
information is known. Collaborative research on this material would be welcomed.
Locations in the mid to upper Fairview and the Bellevue Fms., or in the
Waynesville through Whitewater interval would be of particular interest.
Unpicked sites are most desired so that surface material may be reconstructed
onto excavated colonies.
St. Lawrence University
Canton, NY 13617
Item #3: Posted Wednesday, March 13, 2002 6:20 PM
Name: Jon Branstrator
I am resuming my work on seastar fossils from the Cincinnatian, with special
interests in paxillose genera with strap-like arms (such as Urasterella). Most
fossil seastar specimens are quite fragmental, but they usually show more
important characteristics than near complete ones. Any lead on such fossils
would be appreciated. I would likely ask to borrow, carefully prepare and study
specimens, and that particularly significant ones be donated to the collections
of the Cincinnati Museum of Natural History. Of course I will identify, to the
best of my ability, all specimens that I work on.
Professor of Geosciences
Earlham College 132
Richmond, IN 47374
Item#2: Posted Saturday, June 09, 2001 9:12 AM
Name: Lee.Chiu Nan
Click here for photos of S. lingyuanensis
from Taipei Lee
This is a new found fossil in China 1999
This specimens is Sinohydrosaurus lingyuanensis juvenile_A New Genus and New
Species of Lepidosaurs in Lingyuan, Liaoning, China .
The below is the brief introduction about the precious reptile fossil:
It looks like a nothosaur. After detailed observation, however, the fossil from
Lingyuan shows great differences from the nothosaur, mainly in the osteological
structure, preserved environment and geological time as well. Lingyuan reptile
has no clavicles, but has T-shaped interclavicle. It dived in fresh water in the
area volcano of of Late Jurassic.
Base on the osteological structure, the reptile from Lingyuan should belong to
Lepidosaurs. It is similar to lizards except its long neck. In the neck, there
are 18 vertebra. Therefore it presents a new genus and new species. We name it
as Sinohydrosaurus lingyuanensis. This species shows some filiation to living
This Sinohydrosaurus lingyuanensis is rarer than mesosaur and
Keichousaurus.These specimens all came from famous bird fossil layer of the
Northeast China.And These specimens were?formed by volcanic ash and the slabs
are thin.So unavoidably,most of the specimens were repaired by the binder.
Sinohydrosaur looks like a nothosaur that Keichousaurus belong to ,but it was
early Cretaceous fossil.(125 million years ago).Before the Sinohydrosaurs was
found,the scientist supposed this kind animal was extinct in the late Triassic
period(225 million years ago).So when the Chinese scientists found this kind
fossil,they were shocked!!!
The Sinohydrosaur came from the famous bird fossil layer of the Northeast
China.The scientific value is very high ! The Keichousaurus can not compare with
Click here for some photos of S. lingyuanensis
from Taipei Lee
Item#1: Posted 12/06/2000 5:47 pm EST
Name: Dr. Joseph Carter
Organization: University of North Carolina at Chapel Hill
Title: Professor of Paleontology
I am looking for Ordovician and Silurian lamellibranch (bivalvian) shells
preserved as replacement casts in dark colored (brownish or blackish)
calcite. This kind of preservation has a good chance of preserving relict
shell microstructures, which I study. If you know of a locality with such
preservation, please let me know! I already know of one in the Southgate
Member of the Kope Formation near Carrollton, KY, thanks to Bill
Heimbrock. Thanks! - Joe Carter
Phone: 919 962-0685
Dr. Joseph Carter
Department of Geological Sciences
Chapel Hill, NC 27599-3315