| original |
Early Cretaceous |
|
Texas |
Merrill,J.A. Fossil sponges of the flint nodules in the Lower Cretaceous of Texas. |
1895 |
| details |
Early Cretaceous |
|
Texas |
Sarjeant,W.A.S. Taxonomic notes on hystrichospheres and acritarchs. |
1964 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Nd |
|
Nd |
Lentin,J.K. et al. Fossil dinoflagellates: index to genera and species. |
1973 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |