Hystrichosphaeridium |
Hystrichosphaeridium amplum
sp. nov. |
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium asymmetricum
sp. nov. |
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium brevispinosum
sp. nov. |
New York |
Middle Clintonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium calvum
sp. nov. |
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium digitatum
sp. nov. |
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium group a
sp. nov. |
New York |
Clintonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium group b
sp. nov. |
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium hibbardii
sp. nov. |
New York |
Early Clintonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium longispinosum
sp. nov. |
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium multipilosum
|
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium multispinosum
sp. nov. |
New York |
Silurian |
|
Hystrichosphaeridium |
Hystrichosphaeridium multispinosum
sp. nov. |
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium pentaspinosum
sp. nov. |
New York |
Middle Clintonian |
Late Clintonian |
Hystrichosphaeridium |
Hystrichosphaeridium piriferum
sp. nov. |
New York |
Late Clintonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium quadrangulatum
sp. nov. |
New York |
Early Clintonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium simulatum
|
New York |
Middle Clintonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium sp
|
New York |
Clintonian |
|