Archaeopteryx lithographica (Meyer 1861) Late Jurassic ~150 mya, 30-50 cm in length. Discovered first as a single feather, now there are eleven skeletal specimens of Solnhofen birds. No two of the tested specimens are conspecific. Each add or subtract traits to be listed shortly.
A. siemensii? Thermopolis specimen - WDC CSG 100 is the most primitive of the Solnhofen birds. It needs a new generic name.
A. siemensii Berlin specimen - MB. Av. 101 is basal to the Enantiornithes, including the holotype London specimen. It needs a new generic name.
A. lithographica The London specimen - BMNH 37001, is the holoytype for the genus and species.
A. lithographica Liaoning enantiornithine embryo - IVPP V14238 is most closely related to the London specimen and is from the Liaoning province of China.
A. bavarica Munich specimen - BSp 1999 I 50 is near the base of the Scansoriopterygidae, derived from a sister to specimen #12 (below). Both need new generic names.
Jurapteryx recurva The Eichstaett specimen - JM 2257 is basal to living birds, like Gallus and their fossil kin.
Wellnhoferia grandis The Solnhofen specimen - BSp 1999 nests with the toothless bird, Confuciusornis.
Specimen #12 - undescribed, private - nests at the base of the Scansorioptergidae