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Showing results for tags 'coal swamp'.
SCSeaGal15 posted a topic in Fossil IDFound this antiquing. Was only marked "petrified rock"..It is black & charcoal gray in color with a vertical ribbed texture and some rounded ends. Measures 6.5" tall x 5.5" x 4" and weighs 8lbs 1.1 oz. Is it petrified wood ? Petrified cactus? Or something else? It's only letting me upload 1 photo. Took pics with phone and guess their too big. Will try to post more.
hitekmastr posted a gallery image in Members Gallery
From the album: Carboniferous Plant Fossils in My CollectionThis 2 inch Trigonocarpus is a seed of a Medullosa (pteridosperms seed plants) which grew in shallow swamps abour 306-308 million years ago when St. Clair, PA was located near the Equator. Leaves associated with this seed & tree include Alethopteris and Neuropteris. It is thought that these seeds were encased in fleshy "fruit" like an avocado. The seeds were open at the pointed end to allow pollen to enter when the seeds dropped into the water in the shallow swamps where these trees grew. These were the largest Carboniferous seeds, growing up to 4 inches.