Early Christian art, used to educate followers, combined Greek, Roman and Near 
  Eastern styles. The earliest examples postdate the Roman emporer Constantine, 
  who permitted Christianity with the Edict of Milan in 313 CE. Painted walls 
  and ceilings from catacombs, such as Good Shepherd, Orants and Story of Jonah, 
  are some of the first manifestations of this new art. Constantine ordered the 
  construction of a new basilica in Rome at the site of the burial of Saint Peter 
  (Old Saint Peter's), which became the standard for later Christian basilica-plan 
  churches (narthex, nave with side aisles, transept and clerestory). The Church 
  of Santa Maria Maggiore, Rome, followed a similar plan and was adorned with 
  mosaics of Old Testament stories such as Parting of Lot and Abraham.
  
  The capital of the Western Roman Empire moved from Rome to Milan and finally 
  Ravenna at the beginning of the fifth century. The richly decorated Mausoleum 
  of Galla Placidia is one of the most famous Christian structures from Ravenna. 
  Floral designs covering the arches are surmounted by lunettes depicting apostles 
  and the Good Shepherd, an image showing Christ as a young adult wearing imperial 
  robes and crowned by a halo. Heavenly figures are sepa rated from earthly viewers 
  by a "rocky band." The tendency to differentiate between 
  these two realms continued in Christian art.
  
  Source:  
  http://www2.students.sbc.edu/hill00/seniorseminar/summary4.html 
 The Art of Late Antiquity
  
  Early Christian 29 - 527
  
  TERMS
  
  Edict of Milan 313 - declaration of Roman Imperial 
  religious tolerance
  Catacombs - subterranean burial chambers 
  The Good Shepherd 
  Lunettes
  Prefiguration 
  Orants - figures with arms raised in attitudes of 
  prayer
  Martyr 
  Saint
  Sarcophagus 
  Nave
  Apse 
  Narthex - colonnaded space at right angles to entrance 
  of nave
  Transept - space at right angles to end of nave
  Central-plan - rounded, domed tholos-type structures 
  principally constructed as mausoleums, baptistries, or chapels
  Ambulatory - perimeter colonnade surrounding a central-plan 
  structure corresponding to a rectangular basilica's aisles
  Mosaic
  Mausoleum 
  Nimbus
  Diptych
  Loculi - shelf-like openings to receive the bodies 
  of the dead in the catacomb's galleries
  Cubicula - small rooms constructed in the gallery walls 
  to serve as morturary chapels (G9-256)
  Dura-Europas - small garrison town on the west bank of the Euphrates in 
  Mesopotamia
  Anastasis (Greek: Resurrection)
  Spoila - reused building materials, such as columns, etc. 
  
  Ambo - a large pulpit and reding desk, in early Christian churches
  Bema - in Eastern churches, that part containing the altar combining the bishop's 
  throne and the clergy's stalls
  
  
  
  
  
  
  SLIDES
  
  Late Empire A. D. 192- 337
  
  Arch of Constantine, Rome, c. A.D. 312 - 315 - commemorates 
  Constantine's victory over Maxentius in AD 312; arch uses references from past 
  with shift in motivation behind works, which now uses scales, proportion, and 
  placement to identify individuals
  
  Portrait of Constantine, from the Basilica Nova, Rome, Marble, approx. 8’6” 
  ca. A.D. 315 - 330 - grand scale, bsed on models of 
  Jupiter/Zeus - Constantine shows himself as eternally young in an idealized 
  image
  
  Basilica Nova, (Basilica of Constantine), Rome, C. AD. 306-312
  
  
  Early Christian A. D. 29 - 527
  
  The Good Shepherd,
  ceiling of a cubiculum in the Catacomb of Saint Peter & Marcellinus, Rome 
  early 4th cent.
  
  Sarcophagus of Junius Bassus, Marble, 3’ 101/2” x 8’ Rome, 
  ca. 359
  
  Restored view of Old Saint Peter’s, Rome, begun Ca. 320
  
  Interior of Sta. Costanza, Rome ca. 337 - 351
  
  The parting of Lot and Abraham, mosaic, nave of Santa Maria Maggiore, Rome, 
  432 -440
  
  
  Mausoleum of Galla Placidia, Ravenna, Italy, Ca. 425: - early successful 
  fusion of two basic early church plans, longitudinal and central introduces 
  basilica plan with domed crossing
Priestess celebrating the rites of Bacchus, right leaf of the Diptych of the Nicomachi & the Symmachi, Ivory, 11 3/4” x 5 1/2” ca. 400
Links:
The Christian Catacombs of Rome
  http://www.catacombe.roma.it/ 
"A Visual Tour through Late Antiquity
  With an emphasis on Gaul and the time of Gregory of Tours"
  http://www.nipissingu.ca/department/history/muhlberger/4505/show.htm
DJB Quick Notes:
~ Christian artwork: symbolic references, metaphors, intent behind art
~ after Edict of Milan, Christ is presented as 'ruler', 
  previously shown as 'Good Shepard'
  ~ rectilinear plan - basilica; central plan - mauseoleum
  ~ peacock - symbol of eternal life; vegetation - paradise
  ~ fruiting vines - representing the redeeming blood of Christ
    
DJB In-Depth Notes:
~ Note that there is also a significant difference between the function of the Pagan temple and a Christian context. In Pagan practices the sacrifices and ceremonies generally occurred on the exterior. The temple served as the house of the cult. The cult statue and treasury could be housed there. The temple was a backdrop for the sacrifices. This exterior orientation of the Pagan temple reflects the openness and inclusive nature of Pagan religious practices. But Christianity was by definition a mystery religion, and thus needed to have a clear separation between the faithful and the nonfaithful. This would lead to a significant reorientation of religious architecture from an architecture of the exterior to an architecture of the interior.
Parts of an Early Christian Basilica

1) Propylaeum- the entrance building of a sacred precinct, whether church or imperial palace.
2) Atrium- in early Christian, Byzantine, and medieval architecture, the forecourt of a church; as a rule enveloped by four colonnaded porticoes.
3) Narthex- the entrance hall or porch proceding the nave of a church.
4) Nave- the great central space in a church. In longitudinal churches, it extends from the entrance to the apse (or only to the crossing if the church has one) and is usually flanked by side aisles.
5) Side Aisle- one of the corridors running parallel to the nave of a church and separated from it by an arcade or colonnade.
6) Crossing- the area in a church where the transept and the nave intersect.
7) Transept- in a cruciform church, the whole arm set at right angles to the nave. Note that the transept appears infrequently in Early Christian churches. Old St. Peter's is one of the few example of a basilica with a transept from this period. The transept would not become a standard component of the Christian church until the Carolingian period.
8) Apse- a recess, sometimes rectangular but usually semicircular, in the wall at the end of a Roman basilica or Christian church. The apse in the Roman basilica frequently contained an image of the Emperor and was where the magistrate dispensed laws. In the Early Christian basilica, the apses contained the "cathedra" or throne of the bishop and the altar.
9) Nave elevation- term which refers to the division of the nave wall into various levels. In the Early Christian basilica the nave elevation usually is composed of a nave colonnade or arcade and clerestory.
10) Clerestory- a clear story, i.e. a row of windows in the upper part of a wall. In churches, the clerestory windows above the roofs of the side aisles permit direct illumination of the nave.
 - Source: "The Romanization of Christianity and the Christianization 
  of Rome: the Early Christian Basilica," Art History Courses (SUNY - Oneonta)
  http://employees.oneonta.edu/farberas/arth/ARTH_Courses.html 
  
~ As Christian dogma developed, (this) form of symbolic interpretation of reality became more favored - a flat, decorative abstract style..."Byzantine" transition complete by 6th century (G9-272)