Chochal Formation
64 distinct taxa, from 127 fossil occurrences the Paleobiology Database records under this name, spanning 283–274 Mya.
Huehuetenango · GT
64 taxa · 127 fossils · 283–274 MyaFiled under the Santa Rosa Group. Members recorded: Upper Shaly.
Macrostrat dates this rock 293–269 Ma. Macrostrat’s own record
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3 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Bairdia hassi
- Bairdiacypris
- Cyathus ulrichi
- Kloedenellidae
- Bairdia geisi
- Bairdia indefinita
- Buregia
- Paraparchites
- Acratia
- Bairdia crassa
- Microcheilinella
- Xixionopsis
- Acratia obesa
- Acratia permiana
- Bairdiacypris deloi
- Basslerella acuta
- Basslerella obesa
- Glyptopleura coryelli
- Healdiacypris
- Hercosestria notialis
- Meekella occidentalis
- Microcheilinella perexilis
- Microcheilinella postspinosa
- Newsomites
- Paraparchites complanatus
- Peniculauris subcostata
- Sulcoindivisia juresanensis
- Acratia filippovskaensis
- Actuaria suksuensis
- Anisopyge hyperbola
- Bairdia (Rectobairdia)
- Bairdia subfusiformis
- Bairdia verwiebei
- Basslerella crassa
- Chonosteges
- Composita
- Composita hapsida
- Derbyia
- Echinauris
- Echinauris huehuetenanguensis
The 40 most often recorded, of 64.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.