Saturday, August 15, 2026
Maturifusus Gastropod Fossil
This fossil is a Maturifusus (J. Szabó, 1983) gastropod fossil found in the clay pits at Buttenheim located in the state of Bayern (Bavaria), Germany. I think it is located in the Lias lithostratigraphic unit which would date to the Jurassic. Field of view is about 3 mm. Thanks to Dieter Ketelsen of Hamburg, Germany for the fossils/matrix. Also I appreciate Michael at foraminifera.eu for bringing the matrix the fossil was in and paper guide to the fossil collection area back in 2012. My cousin Kenny, now that he is retired, was able to study this matrix recently using a microscope. Thanks Kenny for the picture.
Tuesday, December 16, 2025
Bathrotomaria regalis
This image is of a Bathrotomaria regalis (Roemer, 1841) gastropod fossil. The animal existed in the Jurassic Period. Fossil was discovered in Haldem, Germany. Fossil was on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.
Monday, December 8, 2025
Scaphopod, Ostracod and Gastropod Fossils
Above is a picture of Dentalium scaphopod, ostracod and gastropod fossils. These animals existed in the Mississippian Period. They were found in the Blue River Group of the St. Louis layer of Harrison County, Indiana USA. Thanks to Kenny for the image.
Monday, November 17, 2025
Strombus fortisi Gastropod Fossil
Monday, October 13, 2025
Persististrombus latus Gastropod Fossil
Here is a picture of a gastropod Strombus bubonius (Lamarck, 1822) fossil at Museo di Geologia e Paleontologia Florence Italy (Università degli Studi di Firenze) in August 2024. The creature lived during the Pleistocene Epoch. It was found at Vallebiaia, Toscany, Italy.
Another name it is referred to is Persististrombus latus (Gmelin, 1791).
Monday, October 6, 2025
Strombus bubonius Fossil
Here is a picture of a gastropod Strombus bubonius (Lamarck, 1822) fossil at Museo di Geologia e Paleontologia Florence Italy (Università degli Studi di Firenze) in August 2024. The creature lived during the Pleistocene Epoch. It was found at Vallebiaia, Toscany, Italy.
Another name it is referred to is Persististrombus latus (Gmelin, 1791).
Saturday, November 30, 2024
Alpena Michigan Microfossils
My cousin screened through a lot of micro material I brought back from Alpena Michigan USA in October 2021. It was found in the Potter Farm Formation and dates to Middle Devonian Period (Erian Age).
The brachiopod fossil in boxes 110 & 117, 76-77, and another in 109 appear to be a Strophondonta crassa (Imbrie,
1959).
Rectangles 107, 108, and 115 appear to be Aulopora coral fossils with some that had grown on a branching bryozoan.
Cornulites appear to be in boxes 60 and 61.
A blastoid in cells 62, 63 & 66 could be Heteroschisma subtruncatum.
Cell 22 is a fish tooth fossil.
Fossil in rectangle 69 is some sort of bone fossil.
Sunday, September 22, 2024
Pileopsis tribolatus
This image is of Pileopsis tribolatus gastropod fossil. It was found in Italy.
Picture taken at Museo di Geologia e Paleontologia Florence Italy (Università degli Studi di Firenze) in August 2024.
Thursday, June 13, 2024
Turbinopsis shumardi Gastropod Fossil
Here are some pictures of a snail fossil known as Turbinopsis shumardi (de Verneuil). It was found in the Jeffersonville Limestone of Falls of the Ohio, Indiana USA. The fossils date to the Devonian Period. It was once part of the collection of southern Indiana paleontologist George K. Greene (1835-1917). It appeared that all of Greene's fossil collection was sold to American Museum of Natural History in New York City after his death but as it turns out there was one cabinet that was not sold and was past down to his descendants.
The fossil species was named after Dr. Benjamin Franklin Shumard (1820-1869) a Louisville educated medical doctor who also collected and studied fossils.
Friday, June 7, 2024
Fragment of a Platyceras dumosum
This fossil fragment is of a Platyceras dumosum (Conrad, 1840) spiny snail (gastropod). It was found in Clark County, Indiana USA. The layer it was found is called the Jeffersonville Limestone which dates to the Middle Devonian Period. My nephews Joseph and Jack found this while we were out collecting.
Sunday, May 5, 2024
Straparollus planispira Gastropod Fossil
This fossil appears to be a Straparollus planispira (Cumings, 1906) gastropod fossil. It was found by Lucien Beckner (1872-1963) in 1928 in Breck County Kentucky, USA. The fossil dates to the Mississippian Period.
Source:
https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=73633&is_real_user=0
Saturday, March 9, 2024
Babylonia areolata Gastropod
Today I am posting about a modern gastropod and not a fossil. It is called Babylonia areolata (Link, 1807) snail and it can grow up to 6 cm in size. The creatures live in the Indian and Pacific Oceans and exist down to about 10 meters. They are important food source in some countries. A co-worker had a vial of the shells that someone brought back as a souvenir from a ocean beach vacation. She gave them to me as I was curious as to what the shell species was. My guess is the snails were caught and cooked and the shells cleaned and then sold to become souvenirs in beach side shops in tourist locations.
Wednesday, March 6, 2024
Ammonoid or Gastropod?... That Is the Question.
Thanks to Levi for the fossil and now we will try to remove some of the matrix to see if any patterns are left from the shell that might give a clue as to what this creature was and maybe its name.
The bottom of the rock has an imprint of a bryozoan fossil.
Thursday, November 9, 2023
Typhis horridus Gastropod Fossils
This image is of a Typhis (Hirtotyphis) horridus (Brocchi, G.B., 1814) gastropod fossils. The creatures existed in the Pliocene Epoch of the Neogene Period. Fossil was discovered in Orciano Pisano, Toscana, Italy.
Picture taken at Museo di Geologia e Paleontologia Florence Italy (Università degli Studi di Firenze) on August 2019.
Monday, October 23, 2023
Rogers Clark Ballard Thruston - Louisville Geologist
Early Years
Rogers "Rog" Clark Ballard was born on November 6, 1858 to Frances "Fanny" Ann Thruston (1826-1896) and Andrew Jackson Ballard (1815-1885) in Louisville, Kentucky, USA. He was born into a wealthy and prestigious family; his great-grandmother was George Rogers Clark (1752-1818) sister. Rogers began his early education at Hopkins Grammer of New Haven, Connecticut and then Williston Seminary of East Hampton, Massachusetts. After his freshman year of college, in the summer of 1877 he helped his father with mining interests in Colorado thus missing the start of his sophomore term.
He graduated in 1880 from the Sheffield Scientific School of Yale University with a degree of Bachelor of Philosophy. To round out his education, late in life the University of Louisville conferred a Master of Arts degree upon him in 1937 and the University of Kentucky awarded him a degree of Doctor of Laws in 1942.
Occupations
After graduating Yale, he started as a clerk for the Monon Railroad office in Louisville and worked his way up to Assistant Ticket Auditor. Later, he became a metallurgist for the Kentucky Geological Survey (KGS) on July 1, 1882. At the age of 25, on October 27, 1884, the Fayette County Court appended his mother's maiden name Thruston to his last name. His mother, the last of the Thrustons, wanted her family name to live on but as it turned out, he never married or had any children. He would sign paperwork with his initials RCBT or R.C. Ballard Thruston.
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| Appears to be a Bellerophon meekianus gastropod fossil found by George Rogers Ballard Thruston in 1883 in a coal seam at Elkhorn Creek, Pike County, Kentucky. |
He helped survey and photograph ("kodak") Pike, Letcher, Harlan, and Bell counties till he left the KGS in 1887. RCBT took employment with the Kentucky Union Land Company where he was buying land in Harlan and Bell counties as well as Wise and Lee counties in Virginia for coal and iron mining. By 1890, he was promoted to Superintendent of the Land Department where he worked on acquiring land for timber and coal in Estill, Powell, Lee, Breathitt, Perry and Letcher counties. In the 1880s, he and his brothers acquired acreage through the Interstate Investment Company in the Big Stone Gap section of Virginia for coal production. RCBT managed the Big Stone Gap Iron Company from 1895 to 1899.
As a side note, The Trail of the Lonesome Pine by John Fox, Jr. (1862-1919) was published in 1908. It became one of the best selling books in the United States in 1908 and 1909. The story takes place in the Appalachian Mountains of Virginia and Kentucky. Its main character is geologist John Hale who the author in part based on Rogers Clark Ballard Thruston. The story was adapted into a 1912 Broadway production, a 1916 Cecil B. DeMille film, a 1923 film and a 1936 film starring Fred MacMurray (1908-1991), Sylvia Sidney (1910-1999), and Henry Fonda (1905-1982). The author John Fox, Jr. was a friend to RCBT in 1890 where his family lived at Big Stone Gap, Virginia.
Retirement
In 1919, at the age of 61, Thruston retired with the intent to spending the rest of life studying history and traveling.
On November 18, 1921 he helped dedicate the Sunshine Ballard Cabin to Berea College. It was in honor of one of his relatives. The cabin allowed the school to expand its Fireside Industries department which taught weaving, basketry, homespun and hand work.
In 1922, he traveled to Naples, Florida, while there he found a number of gastropod shells (fossils?) known as Theodoxus reclivatus (Say, 1822) [modern name is Vitta usnea (Röding, 1798)].
In 1925, he participated in a history pageant in Lexington, Kentucky and dressed as his ancestor George Rogers Clark. He would spend the rest of his life promoting a monument be created to honor George Rogers Clark.
In 1930, he unveiled a monument to George Rogers Clark in Springfield, Illinois.
The Filson Historical Society
Today, the biggest impact Mr. Thruston left upon the Louisville area were his contributions to The Filson Historical Society (FHS). In 1919, he offered $50,000 to help the society obtain a fireproof room to store its collections. When the founder of the society, Reuben T. Durrett died in 1913, his family sold his historic collection the University of Chicago. RCBT went to Chicago to retrieve items that really belonged to the society and returned them to Louisville. He was president of the society from 1923 to 1946. In 1923, he helped the society purchase a new home and in 1929 covered half the cost of moving into it.
He purchased F. W. Leach's research work The Genealogies of the Signers of the Declaration of Independence and donated to the FHS. His photo collection of over 20,000 images from 1880-1942 was also donated to the FHS collection. He contributed the following to the FHS History Quarterly
1926 The Signing of the Declaration of Independence
1928 Letter by Edward Harris 1797
1935 Some Recent Findings Regarding the Ancestry of General George Rogers Clark
1937 Reprint of The Filson Club Program of June 25 1937 The Lincoln Pilgrimage
1941 After the Death of George Rogers Clark
Legacy
He died at 2:15 a.m. at Jewish Hospital in Louisville, Kentucky on December 30, 1946. His funeral was held at Christ Church Cathedral followed by his burial at Cave Hill Cemetery. His remains are buried next to his parents in section G, lot 24, grave 12 at the cemetery.
RCBT left a very explicit 9 page will.
Here is part of it, "As to the disposition of my remains after death. I am the holder of lots 24 and 25 in Section G, in Cave Hill Cemetery, Louisville, Kentucky. There are buried the remains of my maternal grand-parents and their children, my parents, a brother, my sister and certain law kin. The space next to the grave of my father has been set aside for my remains. There I have erected a headstone with an inscription complete except as to the dates of my death; that date I direct my executor to
have suitably inscribed thereon.
My desire is that my body be cremated; that my ashes be placed in a simple glass, metal or pottery container and buried on the site above named. I also desire that all unnecessary forms and ceremonies be dispensed with and that the disposition of my remains after my death be accomplished simply, quickly and inexpensively."
As described above, his financial and research material contributions to the Filson Historical Society are probably his most lasting mark on the Louisville area. In 1947, the Society devoted an entire issue of the History Quarterly to his memory.
Besides the fossils I have documented earlier, he also left specimens to the old museum that was part of the Louisville Free Public Library which was later transferred to what is now the Kentucky Science Center. They are de-accessioning that collection so Thruston's items might now go to the Filson Historical Society or Frazier History Museum. The Speed Art Museum has some of his paintings including one called the View of Jerusalem from 1867.
He and his brothers donated a number of pieces of land to become parks: Ballard Square, Churchill Park and George Rogers Clark Park. In addition, they deeded the original home of George Rogers Clark on Poplar Level Road to the City of Louisville.
Friday, October 20, 2023
Bucanopsis Gastropod Fossil
These pictures are of what appears to be a Bucanopsis (Ulrich and Scofield, 1897) gastropod fossil. It was found in the Carwood Formation of Floyd County, Indiana, USA. The fossil dates to the Mississippian Period. Thanks to Kenny for the images.
Sunday, October 8, 2023
Cyclonema Snail Fossils
Pictures are of two Cyclonema (Hall, 1852) snail fossils found in Clark County, Kentucky, USA. They were probably collected in the 1930s by Colonel Lucien Beckner (1872-1963). The fossils date to the Ordovician Period. Colonel Beckner was a long time curator of the Louisville Museum of Natural History.
Saturday, September 16, 2023
Prunum apicinum Gastropod Shell
This shell appears to be a Common Atlantic Marginella gastropod shell or Prunum apicinum (Menke, 1828). It was found by a 17 year old Lucien Pearson Beckner in 1889 at Naples, Florida, USA. Mr. Beckner was a mentor to Professor James Conkin (1924-2017) and his natural history collection was left to him upon his death.
Monday, September 11, 2023
Spotted Slipper Shell
This shell appears to be a Spotted Slipper Snail or Crepidula maculosa (Conrad, 1846). It was found by a 17 year old Lucien Pearson Beckner in 1889 at Naples, Florida, USA. Mr. Beckner was a mentor to Professor James Conkin (1924-2017) and his natural history collection was left to him upon his death.
Wednesday, July 12, 2023
Maclurea magna Gastopod Fossils
This picture is of a Maclurea magna (Lesueur, 1818) gastropod fossils. It was found in Chazy, New York, USA. It dates to the Silurian Period.
The picture was taken in June 2023 on the first floor of the Smithsonian Museum of Natural History in Washington D.C. USA.










































