Guasasa Formation
69 distinct taxa, from 143 fossil occurrences the Paleobiology Database records under this name, spanning 149–133 Mya.
Recorded under country code CU
69 taxa · 143 fossils · 149–133 MyaMembers recorded: El Americano, Tumbadero.
Macrostrat places this rock in the Los Organso Group, and dates it 155–133 Ma. Macrostrat’s own record
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6 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
- Hildoglochiceras (Salinites) gallardoi
- Salinites
- Salinites grossicostatum
- Parodontoceras
- Radiolaria
- Calpionellopsis
- Hildoglochiceras (Salinites) bicostatum
- Aulacosphinctoides
- Hildoglochiceras
- Buchia
- Calpionella
- Calpionella alpina
- Bivalvia
- Buchia okensis
- Durangites acanthicus
- Globochaete
- Haploceras
- Haploceras veracruzanum
- Lytohoplites
- Mazapilites
- Nebrodites (Mesosimoceras)
- Neochetoceras
- Pachysphinctes
- Protancyloceras gracile
- Pseudoinvoluticeras mozambicum
- Virgatosphinctes pinarensis
- Ammonoidea
- Aulacosphinctoides infundibulum
- Berriasella
- Brachiopoda
- Cadosina
- Calpionellida
- Calpionellites
- Chitinoidella boneti
- Corongoceras cordobai
- Durangites
- Durangites humboldti
- Foraminifera
- Gastropoda
- Glochiceras
The 40 most often recorded, of 69.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.