Catalogue of type specimens in the Walker Museum of Paleontology and Chicago Natural History Museum
Chicago (Ill.). University. Walker Museum of PaleontologyEurypteridaType specimens (Natural history)Fossil RadiolariaChicago (Ill.).Chicago Natural History MuseumUniversity of Chicago. Walker Museum of PaleontologyUniversity of Chicago
Writing a summary for young readers…
For young readers
Book data: Open Library