3 Ayuquililla: Middle Jurassic, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polypodiopsida - Gleicheniales - Matoniaceae
Piazopteris branneri (White 1913)
Polypodiopsida - Equisetales - Equisetaceae
Equisetum rajmahalense (Oldham and Morris 1863)
Bennettitales
see common names

Geography
Country:Mexico State/province:Oaxaca
Coordinates: 17.8° North, 98.1° West (view map)
Paleocoordinates:6.5° North, 36.7° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Jurassic Epoch: Middle Jurassic
10 m.y. bin: Jurassic 3-5
*Period:Middle Jurassic
Key time interval: Middle Jurassic
Age range of interval: 174.7 - 161.5 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Tecomazuchil
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: silty sandstone
Includes fossils?Y
Taphonomy
Modes of preservation:mold/impression,adpression
Size of fossils:macrofossils
Preservation of anatomical detail:poor
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:24679
Authorizer:A. Rees Enterer:D. Sunderlin
Modifier:D. Sunderlin Research group:paleobotany
Created:2002-08-15 12:52:25 Last modified:2025-02-22 15:12:02
Access level:the public Released:2002-08-15 12:52:25
Creative Commons license:CC0
Reference information

Primary reference:
6935.PGAP A. Silva-Pineda. 1978. Plantas del Jurasico Medio del sur de Puebla y noroeste de Oaxaca. Universidad Nacional Autonoma de Mexico, Instituto de Geologia, Paleontologia Mexicana 44(3):27-56 [A. Rees/D. Sunderlin/D. Sunderlin]