Atco Formation
39 distinct taxa, from 42 fossil occurrences the Paleobiology Database records under this name, spanning 90–86 Mya.
Texas · US
39 taxa · 42 fossils · 90–86 MyaFiled under the Austin Group.
Macrostrat places this rock in the Austin Group, and dates it 90–86 Ma. Macrostrat’s own record
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2 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
- Alamodactylus byrdi
- Anomoeodus barberi
- Cantioscyllium decipiens
- Chelonioidea
- Chiloscyllium greeni
- Cretalamna appendiculata
- Cretodus crassidens
- Cretoxyrhina mantelli
- Dallasiella willistoni
- Dinogymnium acuminatum
- Dinogymnium euclaense
- Enchodus petrosus
- Ginglymostoma
- Hadrodus
- Heterodontus
- Ischyrhiza schneideri
- Ischyrhiza texana
- Johnlongia parvidens
- Meristodonoides
- Mosasauridae
- Nanocorax
- Protosphyraena perniciosa
- Pseudocorax laevis
- Pseudohypolophus
- Pseudoscapanorhynchidae
- Pseudoscapanorhynchus compressidens
- Ptychodus atcoensis
- Ptychodus latissimus
- Ptychodus mammillaris
- Ptychodus martini
- Ptychodus whipplei
- Ptychotrygon triangularis
- Rhinobatos lobatus
- Scapanorhynchus raphiodon
- Sclerorhynchus priscus
- Squalicorax falcatus
- Tanyosphaeridium salpinx
- Texatrygon hooveri
- Xiphactinus audax
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.