Pero Filho (Miocene of Portugal)

Also known as Bassin du Tage, Tagus basin, Tagus' basin, Tagus'

Where: Santarém, Portugal (39.3° N, 8.7° W: paleocoordinates 39.4° N, 9.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lower Bone Bed Formation, MN 6 (13.7 - 12.8 Ma)

• The number of species represented in Pero Filho is much more limited than Póvoa de Santarém fauna. "..Megacricetodon crusafonti in association with Conohyus places Pero Filho in the exact same level as Póvoa de Santarém, and a litte more recent than Sanson.

•The presence of Anchitherium and absence of Hipparion excludes an Upper Miocene age. "..Megacricetodon crusafonti, Fahlbuschia darocensis, Cricetodon jotae [in coll. 38137] are characteristic of mammalian MN6 unit, thus their age is is nearly that of Sansan and Manchones (however the presence of Peridyromys hamadryas and Lagopsis verus [also only in coll. 38137] do suggest, amidst this biozone, a somewhat later age than Sansan's).." Indirect correlation with marine formations, underlying oyster-bearing beds most probably in correspondance to the apogee of the same transgression that deposed near Lisbon "schlier" facies from VI-a division division (Serravalian, Blow's zones 10-13, Globorotalia meyeri zone).

• bed-level stratigraphic resolution

Environment/lithology: fluvial; coarse-grained, concretionary mudstone and lignite

• A more strictly fluviatile deposit with limestone concretions are from the Massif Calcaire.
• Lignitic clay with limestone concretions, though courser and less lignite than collection 38134.

Size classes: macrofossils, mesofossils, microfossils

Collection methods: core, sieve,

• In the collections of the Centro de Estratigrafia e Paleobiologia das Universidades de Lisboa.

Primary reference: M. T. Antunes and P. Mein. 1977. Contributions à la paléontologie du Miocène moyen continental du Bassin du Tage, III; Mammifères - Póvoa de Santarém, Pero Filho et Chões (Secorio), Conclusions générales. [Paleontology of the continental middle Miocene of the Tagus Basin, III; Mammals - Póvoa de Santarém, Pero Filho et Chões (Secorio), General Conclusions. Ciencias de Terra (UNL) (3)143-165 [J. Alroy/R. Whatley/J. Head]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 38139: authorized by John Alroy, entered by Robin Whatley on 13.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• r = rare

•c = common

•a = abundant

"Helix" "cotteri"
Authority is Roman.
 Cardiida - Sphaeriidae
Pisidium sp. Pfeiffer 1821 pea clam
 Unionida - Unionidae
cf. Unio ribeiroi freshwater mussel
Authority is Fontannes.
 Rissooidea - Bithyniidae
Bithynia sp. Leach 1818 snail
 Pulmonata - Gastrodontidae
Janulus olisiponensis slug
Authority is Roman.
 Cypriniformes - Cyprinidae
Leuciscus antunesi carp-like fish
Authority is Gaudant 1977.
 Rodentia - Cricetidae
Fahlbuschia darocensis Freudenthal 1963 mouse
Megacricetodon crusafonti Freudenthal 1963 mouse
 Rodentia - Gliridae
"Paraglirulus scalabicensis n. sp." = Microdyromys complicatus
"Paraglirulus scalabicensis n. sp." = Microdyromys complicatus De Bruijn 1966 dormouse
 Lagomorpha - Ochotonidae
Prolagus oeningensis König 1825 pika
Lagopsis verus Hensel 1856 pika
 Perissodactyla - Rhinocerotidae
Rhinocerotidae indet. Gray 1821 rhinoceros
 Carnivora - Amphicyonidae
Amphicyon major De Blainville 1841 bear-dog
Authority is "(Blainville)".
 Proboscidea - Gomphotheriidae
Gomphotheriidae indet. Hay 1922 gomphothere
 Artiodactyla - Suidae
Conohyus simorrensis Lartet 1851 pig
Authority is "(Lartet)".
"Metazoa indet." = Animalia
"Metazoa indet." = Animalia Linnaeus 1758
 Charales - Characeae
Characeae sp. Agardh 1824
Plantae indet. Haeckel 1866
Pollen (diverse)
Plantae indet. Haeckel 1866
stems and wood