Texas Fossil Echinoid Book Comparisons:

          Book:                   Color Photos  B&W Photos     Pages      Genus Count     Species Count     Type Specimen Count

1. Thompson           1288                 4                         414           99                        237                       135                                
2. Akers & Akers      0                      652                     143           69                        137                       drawings only             
3. Bill Morgan          387                   8                         160           56                        106                       16                                 
4. Charles Finsley   6                       106                     211           39                         94                         none