Alacran Mountain Formation
27 distinct taxa, from 47 fossil occurrences the Paleobiology Database records under this name, spanning 294–283 Mya.
Texas, New Mexico · US
27 taxa · 47 fossils · 294–283 MyaMacrostrat places this rock in the Hueco Group, and dates it 286–284 Ma. Macrostrat’s own record
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7 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
- Composita mexicana
- Pontisia
- Dasysaria inca
- Omphalotrochus obtusispira
- Enteletes dumblei
- Hustedia huecoensis
- Productus semistriatus
- Stenoscisma hueconianum
- Stewartina convexa
- Straparollus (Euomphalus) cornudanus
- Yochelsonellisa eximia
- Amphiscapha (Amphiscapha) dextrata
- Glabrocingulum coronatum
- Glyptospira tricostata
- Kozlowskia capaci
- Kutorginella dartoni
- Meekella mexicana
- Oncosarina whitei
- Pontisia stehlii
- Reticulariina hueconiana
- Rhynchopora taylori
- Schwagerina crassitectoria
- Schwagerina franklinensis
- Schwagerina menziesi
- Schwagerina nelsoni
- Stenopoceras
- Tropidelasma pygmaeum
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.