Tompire Bay (BT456) (Cretaceous of Trinidad and Tobago)

Where: Trinidad and Tobago (10.8° N, 60.9° W: paleocoordinates 10.5° N, 29.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Barremian (129.4 - 125.0 Ma)

Environment/lithology: marine; metamorphosed phyllite

• "pyritic ammonites enclosed in a low-grade phyllite matrix"

Size class: macrofossils

Preservation: replaced with pyrite

Primary reference: R. W. Imlay. 1954. Barremian ammonites from Trinidad, B.W.I. Journal of Paleontology 28(5):662-667 [J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 68921: authorized by John Alroy, entered by John Alroy on 13.02.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Cephalopoda
 Ammonoidea -
Pulchellia sp. ammonite
juvenile; possibly three species are present
 Ammonitida - Desmoceratidae
? Barremites sp. ammonite
juvenile
Melchiorites sp. Spath 1923 ammonite
juvenile
 Ammonitida - Pulchelliidae
? Nicklesia sp. Hyatt 1903 ammonite
juvenile
 Ammonitida - Lytoceratidae
Lytoceras sp. Suess 1865 ammonite
juvenile
 Ammonitida - Olcostephanidae
? Saynoceras sp. ammonite
juvenile
 Ammonitida - Ancyloceratidae
"Leptoceras cf. beyrichii" = Karsteniceras beyrichii, ? Ancyloceras sp.
"Leptoceras cf. beyrichii" = Karsteniceras beyrichii Karsten 1858 ammonite
? Ancyloceras sp. d'Orbigny 1842 ammonite
juvenile
 Phylloceratida - Phylloceratidae
Phylloceras sp. Suess 1865 ammonite
juvenile
 Ammonoidea - Protancyloceratidae
Leptoceras sp. Uhlig 1883 ammonite
 Ammonoidea - Hamulinidae