Culebra Formation

Geology

Members: unnamed (22), basal upper (3), Emperador (1), Emperador Limestone (22), lower (20), upper (23)

Lithologies: not reported (2), "siliciclastic" (1), claystone (5), mudstone (14), "shale" (14), siltstone (2), sandstone (30), conglomerate (4), grainstone (3), "reef rocks" (3), "limestone" (24), lignite (11)

Paleoenvironments: marine indet. (25), carbonate indet. (15), shallow subtidal indet. (3), lagoonal/restricted shallow subtidal (1), reef, buildup or bioherm (8), coastal indet. (19), estuary/bay (11), prodelta (1), fluvial-deltaic indet. (4)

Age range: base of the Aquitanian to the top of the Early/Lower Hemingfordian or 23.04000 to 16.30000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Arikareean - Barstovian29.5 - 12.5Panama (106005)
Aquitanian23.04 - 20.45Panama (Panama) (159349 159350 159351 159352 159353 159354 159355 159356)
Aquitanian23.04 - 20.45Panama (42602 42603 93236 42607 42608 42609 42610 42624 42625 42626 42627 42628 42629 42630 42631 42632 42633 49489 49490 49492 60251 60255 60259 60261 60262 60264 60267 93038 93039 93040 93237 93238 93239 93240 93241 93242 93243 96703 124533 124636 145561 145562 145563 145564 145566 207014 207015 226686)
Aquitanian - Burdigalian23.04 - 15.98Panama (199917)
Early/Lower Miocene23.04 - 15.98Panama (32390 32391 32392 32393 32394 32395 32396 32397 32399 32400 32401)
Burdigalian20.45 - 15.98Panama (42606 42611 42612 42613 42614 42615 42616 42617 42618 42619 42620 42621 42622 42623 49491 49493 92988 92989 93041 93042)
Early/Lower Hemingfordian18.5 - 16.3Panama (96702 142893)