This amazing interpretation was developed by D.A. Eggert (1961) who painstakingly reconstructed the development of Lepidodendron by serially sectioning many individuals preserved in coal balls.
Others larger individuals preserved inside giant balls of mudstone had lost body parts, including the front of the head, to imperfect preservation.
Large assemblages of metoposaurs with hundreds of individuals preserved together have been found in the southwestern United States.
All analyses were conducted with individuals preserved in 100% ethanol.
Although aging is accompanied by diminished functioning, many elderly individuals preserve a sense of well-being.
The eurypterid material comprises partially disarticulated individuals preserved as organic cuticle within fine shale laminations.
The individuals preserved in absolute ethanol were opened and the visceral mass, which includes the gonads, was cut.
This is particularly evident among the oldest old where some individuals preserve strikingly high levels of health and functional ability.
Total DNA was extracted from individuals preserved in 95% ethanol using DNeasy Blood & Tissue Kit (Qiagen), following the manufacturer's protocol.
Isolates from South America and Europe were extracted from single individuals preserved in 95% ethanol using the Mammalian genomic DNA GenElute kit (Sigma-Aldrich).
