Moreno Formation
Mesozoic geologic formation in San Joaquin Valley, California
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The Moreno Formation is a Mesozoic geologic formation located in San Joaquin Valley (California).
Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.[1]
| Moreno Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Unit of | Chico Group |
| Underlies | Unconformity with the Martinez Formation and Tejon Formation |
| Overlies | Panoche Formation |
| Thickness | 1,600–2,000 ft (487.68–609.60 m) |
| Lithology | |
| Primary | Shale |
| Other | Sandstone |
| Location | |
| Region | San Joaquin Valley, California |
| Country | United States |
Paleofauna
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Cartilaginous fish
| Cartilaginous fishes reported from the Moreno Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Member | Material | Notes | Images |
| Heptranchias[2] | H. sp | |||||
Ray-finned fish
| Ray-finned fishes reported from the Moreno Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Member | Material | Notes | Images |
|
B. gladius |
A large, filter-feeding pachycormid. |
 | ||||
|
S. sp. |
An ichthyodectid. |
 | ||||
Dinosaurs
| Dinosaurs reported from the Moreno Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Member | Material | Notes | Images |
|
A. morrisi[4] |
saurolophine.[4] |  | ||||
| Saurolophus[4] |
S. morrisi[4] |
Reclassified as Augustynolophus morrisi.[4] | ||||
Mosasaurs
| Mosasaurs reported from the Moreno Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Member | Material | Notes | Images |
|
K. bennisoni[5] |
The name Kolposaurus was preoccupied and its two constituent species moved to the new genus Plotosaurus.[5] |
|||||
|
K. tuckeri[5] |
||||||
|
P. crassidens[6] |
 | |||||
|
P. bennisoni[5] |
 | |||||
| P. tuckeri[5] | A junior synonym of P. bennisoni. | |||||
|
P. cf. waiparaensis |
||||||
|
cf. Mosasaurus[7] |
cf. M. sp. |
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|
H. sp. |
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Plesiosaurs
| Plesiosaurs reported from the Moreno Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Member | Material | Notes | Images |
|
A. furlongi[8] |
 | |||||
|
F. drescheri[9] |
 | |||||
|
H. alexandrae[8] |
 | |||||
|
M. stocki[9] |
 | |||||
Turtles
| Testudines reported from the Moreno Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Member | Material | Notes | Images |
|
J. Howard Hutchison later referred the specimen originally identified as Adocus by to the genus Basilemys.[10] |
||||||
Foraminifera
| Forams reported from the Moreno Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Member | Material | Notes | Images |
| Anomalina[2] | A. pseudopopillosa | Tierra Loma Shale Member | ||||
| Bulimina | B. obtusa | Tierra Loma Shale Member | 99% of the foraminifera sampled at the Tierra Loma Shale Member belonged to B. obtusa.[11][12] | |||
| Dentalina[2] | D. legumen | Tierra Loma Shale Member | ||||
| Frondicularia[2] | F. undulosa | Tierra Loma Shale Member | ||||
| Gyroidina[2] | G. depressa | Tierra Loma Shale Member | ||||
| Nodosaria[2] | N. monile | Tierra Loma Shale Member | ||||
| N. pomuligera | ||||||
| N. spinifera | ||||||
| N. sp | ||||||
| Nodosarella[12] | N. sp | Tierra Loma Shale Member | ||||
