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| Group | Order | Common | count |
|---|---|---|---|
Cidaroida |
1 | ||
Euechinoidea |
4 | ||
Phymosomatoida |
2 | ||
Salenioida |
2 | ||
Spatangoida |
Heart Urchins | 6 | |
zNone |
5 |
>Order: Cidaroida
Formation: GrahamThrifty
Jack County | J1-778
>Order: Euechinoidea
Formation: Walnut
Travis County | T1-700
Formation: Glen Rose
Kerr County | K4-863
Formation: Fort Terrett
Kerr County | K1-862
Formation: Comanche Peak
Coryell County | 855
>Order: Phymosomatoida
Formation: Austin Chalk
Williamson County | W1-724
Formation: Buda
Williamson County | W2-737
>Order: Salenioida
Formation: Other
zUnknown County | 865
Formation: Buda
Williamson County | W2-580
>Order: Spatangoida
Formation: Other
zUnknown County | 864
Formation: Austin Chalk
Williamson County | W1-774
Formation: Austin Chalk
Travis County | W1-511
Formation: Buda
Williamson County | W2-738
Formation: Comanche Peak
Coryell County | 857
Formation: Buda
Williamson County | W2-771
>Order: zNone
Formation: Buda
Williamson County | W2-642
Formation: Buda
Travis County | T2-644
Formation: Buda
Williamson County | W2-769
Formation: Fort Terrett
Kerr County | K1-685
Formation: Glen Rose
Comal County | 189
There are no entries for this topic yet.
| Period | Formation | count |
|---|---|---|
| Cretaceous | Austin Chalk | 3 |
| Cretaceous | Buda | 7 |
| Cretaceous | Comanche Peak | 2 |
| Cretaceous | Fort Terrett | 2 |
| Cretaceous | Glen Rose | 2 |
| Cretaceous | Other | 2 |
| Cretaceous | Walnut | 1 |
| Pennsylvanian | GrahamThrifty | 1 |