Promissum
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Promissum is an extinct genus of conodonts, primitive chordates, that lived during the Upper Ordovician period.
Promissum NT small
Conodont
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Conodonts are an extinct group of marine jawless vertebrates belonging to the class Conodonta. They are primarily known from their hard, mineralised tooth-like structures called "conodont elements" th
Promissum
…Promissum is an extinct genus of conodonts, primitive chordates, that lived during the Upper Ordovician period. A conodont, Promissum had a primitive mouth under its eyes with mineralized teeth…
Conodonts from the Glen Dean formation of the Illinois basin
Conodont elements from the Silurian of Gotland, Sweden
Complete element set of the conodont Hindeodus parvus
Model of elements of Manticolepis subrecta – a conodont from the Upper Frasnian of Poland – photography taken in the Geological Museum of the Polish Geological Institute in Warsaw