The Eratosthenian period in the lunar geologic timescale runs from 3,200 million years ago to 1,100 million years ago. It is named after the crater Eratosthenes...

Earth's Moon into five generally recognized periods: the Copernican, Eratosthenian, Imbrian (Late and Early epochs), Nectarian, and Pre-Nectarian. The...

is of the Imbrian and Eratosthenian age. Bullialdus crater, a prominent feature on the west side of the mare, is of Eratosthenian age. Other features within...

near the exterior of the southwest wall. Diophantus is a crater of Eratosthenian age. This cleft follows a generally east–west path across the Mare Imbrium...

is from the Lower Imbrian epoch, and the mare material is from the Eratosthenian epoch.[citation needed] "Mare Vaporum". Gazetteer of Planetary Nomenclature...

distance from the Earth to the Sun. Eratosthenes (crater) on the Moon. Eratosthenian period in the lunar geologic timescale. Eratosthenes Seamount in the...

– −1500 — – −1000 — – −500 — – 0 — Pre-Nectarian Nectarian Imbrian Eratosthenian Copernican Late Early       Periods on the Lunar Geologic Timescale...

Five geologic systems/periods (Pre-Nectarian, Nectarian, Imbrian, Eratosthenian, Copernican), with the Imbrian divided into two series/epochs (Early...

ascends 1.5 kilometers above the crater floor. Pythagoras is a crater of Eratosthenian age. By convention these features are identified on lunar maps by placing...

– −1500 — – −1000 — – −500 — – 0 — Pre-Nectarian Nectarian Imbrian Eratosthenian Copernican Late Early       Periods on the Lunar Geologic Timescale...

is 78 kilometers in diameter and 2,500 meters deep. It is from the Eratosthenian period, 3.2 to 1.1 billion years ago. It is named after David Fabricius...

Rima Brayley passes to the north of Brayley. Brayley is a crater of Eratosthenian age. By convention these features are identified on lunar maps by placing...

western rim that encloses the Mare Serenitatis. Plinius is a crater of Eratosthenian age. The sharp rim of Plinius is slightly oval in form, with a terraced...

4th-century Greek astronomer and mathematician. The crater is from the Eratosthenian period, which lasted from 3.2 to 1.1 billion years ago. It is 17 kilometers...

To east of Picard is the tiny Curtis. Picard is a crater from the Eratosthenian period, which lasted from 3.2 to 1.1 billion years ago. Inside Picard...

by rays from the prominent crater Copernicus to the south-west. The Eratosthenian period in the lunar geological timescale is named after this crater...

The crater Theophilus on the northeastern side of the mare is of the Eratosthenian period. Thus, the crater is younger than the mare to its southeast....

broken into a second formation, Cyrillus. It was created during the Eratosthenian period, from 3.2 to 1.1 billion years ago. It has an imposing central...

from its rim to the floor is 3470 meters. Theon Senior is from the Eratosthenian period, which lasted from 3.2 to 1.1 billion years ago. By convention...

– −1500 — – −1000 — – −500 — – 0 — Pre-Nectarian Nectarian Imbrian Eratosthenian Copernican Late Early       Periods on the Lunar Geologic Timescale...

well as a low, conical hill near the midpoint. Peirce is a crater of Eratosthenian age. By convention these features are identified on lunar maps by placing...

Copernican unit consisting of craters with a ray system. Below this is the Eratosthenian unit, defined by craters with established impact crater morphology,...

– −1500 — – −1000 — – −500 — – 0 — Pre-Nectarian Nectarian Imbrian Eratosthenian Copernican Late Early       Periods on the Lunar Geologic Timescale...

and has a central rise near the midpoint. Rothmann is a crater of Eratosthenian age. Rothmann is named after German astronomer Christopher Rothmann...

Regiomontanus, and to the north is the remains of Blanchinus. It is from the Eratosthenian period, which lasted from 3.2 to 1.1 billion years ago. The rim of Werner...

material partially burying these projections. Aristoteles is a crater of Eratosthenian age. Location of Aristoteles as photographed at the McDonald Observatory...

surrounded by a small rampart of hummocky terrain. Delisle is a crater of Eratosthenian age. This formation has also been designated "De l'Isle" in some sources...

small cluster of hills to the south. Hausen is the largest crater of Eratosthenian age. Hausen lies to the south of the Mendel-Rydberg Basin, a 630 km...

marking of ray-like material with a high albedo. Reiner is a crater of Eratosthenian age. It is named after the astronomer Vincentio Reinieri, a disciple...

tiny craterlet lies across the southern rim. Herschel is a crater of Eratosthenian age. By convention these features are identified on lunar maps by placing...