Frankish warrior from the German invasions of the Roman Empire.

Frankish Warrior

Frankish warrior from the German invasions of the Roman Empire.

The coat of arms of the papacy and Roman Catholic church.

Roman Catholic Coat of Arms

The coat of arms of the papacy and Roman Catholic church.

Santa Maria Maggiore church in Rome built shortly after the time of Constantine.

Santa Maria Maggiore

Santa Maria Maggiore church in Rome built shortly after the time of Constantine.

Lateran Palace in Rome where Roman bishops would stay in the time of Constantine.

Lateran Palace

Lateran Palace in Rome where Roman bishops would stay in the time of Constantine.

The ancient basilica of St. Peter in Rome.

St. Peter's Basilica

The ancient basilica of St. Peter in Rome.

The tomb of the Roman Emperor Hadrian, in Rome.

Hadrian's Tomb

The tomb of the Roman Emperor Hadrian, in Rome.

The tower of Giralda is a mosque in Seville.

Giralda

The tower of Giralda is a mosque in Seville.

The Roman amphitheater in Arles built in the Middle Ages.

Amphitheater

The Roman amphitheater in Arles built in the Middle Ages.

The architecture in Pisa: a cathedral, baptistry, and Leaning Tower.

Pisa

The architecture in Pisa: a cathedral, baptistry, and Leaning Tower.

The obverse and reverse sides of a silver penny during the reign of William the Conqueror.

Medieval Coin

The obverse and reverse sides of a silver penny during the reign of William the Conqueror.

The obverse and reverse sides of a silver groat during the reign of Edward III.

Medieval Coin

The obverse and reverse sides of a silver groat during the reign of Edward III.

A fountain in Rome, Italy.

Fountain

A fountain in Rome, Italy.

The trilobite was an early animal on earth during the Primordial Period.

Trilobite

The trilobite was an early animal on earth during the Primordial Period.

A track of the early life form, the trilobite.

Trilobite Track

A track of the early life form, the trilobite.

A mollusk radiate from the Paleozoic time, Stictopora acuta.

Mollusk Radiate

A mollusk radiate from the Paleozoic time, Stictopora acuta.

A mollusk radiate from the Paleozoic time, Pentamerus oblongus, a brachiopod from the Clinton group.

Pentamerus Brachiopod

A mollusk radiate from the Paleozoic time, Pentamerus oblongus, a brachiopod from the Clinton group.

A mollusk radiate from the Paleozoic time, Orthis varica of the Niagara group.

Orthis Mollusk

A mollusk radiate from the Paleozoic time, Orthis varica of the Niagara group.

A mollusk radiate from the Paleozoic time, Strophomena rhomboidalis

Strophomena Mollusk

A mollusk radiate from the Paleozoic time, Strophomena rhomboidalis

A mollusk radiate from the Paleozoic time, Rhynchotreta cuneata from the United States and Great Britain.

Rhynchotreta Mollusk

A mollusk radiate from the Paleozoic time, Rhynchotreta cuneata from the United States and Great Britain.

A mollusk radiate from the Paleozoic time, Pterinea emacerata from the Niagara group.

Pterinea Mollusk

A mollusk radiate from the Paleozoic time, Pterinea emacerata from the Niagara group.

A mollusk radiate from the Paleozoic time, Cyclonema cancellata from the Clinton group.

Cyclonema Mollusk

A mollusk radiate from the Paleozoic time, Cyclonema cancellata from the Clinton group.

A mollusk radiate from the Paleozoic time, Platyceras angulatum from the Niagara group.

Platyceras Mollusk

A mollusk radiate from the Paleozoic time, Platyceras angulatum from the Niagara group.

An articulate radiate from the Paleozoic time, Homalonotus delphinocephalus.

Articulate Radiate

An articulate radiate from the Paleozoic time, Homalonotus delphinocephalus.

An ancient mollusk from the Paleozoic time, Spirifer mucronatus.

Sprifer Mollusk

An ancient mollusk from the Paleozoic time, Spirifer mucronatus.

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

Goniatites Mollusk Fossil

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

Goniatites Mollusk

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

An ancient articulate from the Paleozoic time, Pacops bufo from the Hamilton group.

Pacops Articulate

An ancient articulate from the Paleozoic time, Pacops bufo from the Hamilton group.

Ganoids were ancient fish from the Paleozoic time. The image is of the Cephalaspis Lyellii.

Ganoid

Ganoids were ancient fish from the Paleozoic time. The image is of the Cephalaspis Lyellii.

Ganoids were ancient fish from the Paleozoic time. The image is of the Holoptychius.

Ganoid

Ganoids were ancient fish from the Paleozoic time. The image is of the Holoptychius.

An ancient radiate from the Carboniferous Age, the Zeacrinus elegans.

Zeacrinus Radiate

An ancient radiate from the Carboniferous Age, the Zeacrinus elegans.

An ancient radiate from the Carboniferous Age, the Actinocrinus proboscidialis.

Actinocrinus Radiate

An ancient radiate from the Carboniferous Age, the Actinocrinus proboscidialis.

An ancient radiate from the Carboniferous Age, the Pentremites pyriformis.

Pentremites Radiate

An ancient radiate from the Carboniferous Age, the Pentremites pyriformis.

An ancient radiate from the Carboniferous Age, the Lithostrotion Canadense.

Lithostrotion Radiate

An ancient radiate from the Carboniferous Age, the Lithostrotion Canadense.

An ancient mollusk from the Carboniferous Age, the Archimedes reversa.

Archimedes Mollusk

An ancient mollusk from the Carboniferous Age, the Archimedes reversa.

Two ancient mollusks from the Carboniferous Age, the Productus Nebrascensis and the Athyris subtilita.

Ancient Mollusks

Two ancient mollusks from the Carboniferous Age, the Productus Nebrascensis and the Athyris subtilita.

An ancient mollusk from the Carboniferous Age, the Spirifer cameratus.

Spirifer Mollusk

An ancient mollusk from the Carboniferous Age, the Spirifer cameratus.

Four varieties of mollusks from the Mesozoic time: "391, Exogyra costata; 392, Inoceramus problematicus; 393, Gryphaea vesicularis; 394, G. Pitcheri." -Dana, 1883

Mesozoic Mollusks

Four varieties of mollusks from the Mesozoic time: "391, Exogyra costata; 392, Inoceramus problematicus;…

The Hesperornis regalis was an ancient bird of the Cretaceous Period.

Hesperornis Regalis

The Hesperornis regalis was an ancient bird of the Cretaceous Period.

The lower jaw of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

Hesperornis Lower Jaw

The lower jaw of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

A tooth of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

Hesperornis Tooth

A tooth of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

A vertebrae of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

Hesperornis Vertebrae

A vertebrae of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

A vertebrae of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

Hesperornis Vertebrae

A vertebrae of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

The pelvis of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

Hesperornis Pelvis

The pelvis of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

A variety of invertebrates from the Tertiary age.

Tertiary Invertebrates

A variety of invertebrates from the Tertiary age.

Two teeth of sharks: "436, Carcharodon angustidens; 435, Lamna elegans." -Dana, 1883

Shark Teeth

Two teeth of sharks: "436, Carcharodon angustidens; 435, Lamna elegans." -Dana, 1883

An ancient sculpture from Peru.

Peruvian Sculpture

An ancient sculpture from Peru.

A Peruvian drawing of Inca warriors.

Peruvian Drawing

A Peruvian drawing of Inca warriors.

The ichthyornis an ancient bird of the Cretaceous Period.

Ichthyornis

The ichthyornis an ancient bird of the Cretaceous Period.

The skull and upper jaw of an early rhinoceros-like mammal from the Cenozoic time.

Dinoceras Mirabile

The skull and upper jaw of an early rhinoceros-like mammal from the Cenozoic time.

The Roman Triumphal Arch in Orange, France. The image is of how the Arch looks now.

Triumphal Arch

The Roman Triumphal Arch in Orange, France. The image is of how the Arch looks now.

Roman States Flag

Roman States Flag

Roman States Flag

Coat of Arms, Roman States

The Great Seal of the Roman States

Coat of Arms, Roman States

Roman States Stamp (4 bajocchi) from 1852

Roman States 4 Bajocchi Stamp, 1852

Roman States Stamp (4 bajocchi) from 1852

Roman States Stamp (1 scudo) from 1852

Roman States 1 Scudo Stamp, 1852

Roman States Stamp (1 scudo) from 1852

Illustration of 12 books labeled with Roman Numerals.

Books With Roman Numerals

Illustration of 12 books labeled with Roman Numerals.

Illustration of cards that can be used for a matching game with Roman numerals, English numerals, and words.

Matching Game With Roman Numerals

Illustration of cards that can be used for a matching game with Roman numerals, English numerals, and…

Illustration of a child washing face at 7:00. It can be used to write mathematics story problems involving telling time and roman numerals.

Telling Time 7:00 Story Problem

Illustration of a child washing face at 7:00. It can be used to write mathematics story problems involving…

Illustration of a child eating breakfast at 8:00. It can be used to write mathematics story problems involving telling time and roman numerals.

Telling Time 8:00 Story Problem

Illustration of a child eating breakfast at 8:00. It can be used to write mathematics story problems…

Illustration of a child going up stairs at 9:00. It can be used to write mathematics story problems involving telling time and roman numerals.

Telling Time 9:00 Story Problem

Illustration of a child going up stairs at 9:00. It can be used to write mathematics story problems…

Illustration of a child reading at school at 10:00. It can be used to write mathematics story problems involving telling time and roman numerals.

Telling Time 10:00 Story Problem

Illustration of a child reading at school at 10:00. It can be used to write mathematics story problems…