Athene albifacies (now Sceloglaux albifacies) - The Laughing Owl

This now-extinct owl of New Zealand was in a monotypic genus (meaning there was only one species in the genus), and was one of the most genetically distinct owls, having been isolated from other Strigidae for longer than any other genus.

Collection of the owls for museums, food, and predation by introduced animals led to their extinction sometime around 1912. Interestingly, these owls actually adapted surprisingly well to the intrusion of introduced species such as rats. They weren’t ground-nesters, so their eggs weren’t threatened by the fat Norway rats that were not as keen on climbing as other rats were, and the big rats made a fine meal for owlets. So really, their extinction was caused by direct predation by humans.

The Zoology of the Voyage of the H.M.S. Erebus & Terror, 1839-1843. John Richardson and J. E. Gray, 1845.

Internal oblique muscles, transversalis muscle, cremaster muscle, and related structures.

Conical part of the cellular sheath surrounding the spermatic cord (the vas deferens and epigastric artery) is continuous with deep fascia transversalis and peritoneum. 

Drawings of the Anatomy of the Groin; with Anatomical Remarks. W. Darrach, M.D., 1844.

External oblique muscles and related structures.

Left side of abdomen reflected to display integument layers and tendon of external obliques. The three layers of fascia are displayed as well.

Drawings of the Anatomy of the Groin; with Anatomical Remarks. W. Darrach, M.D., 1844.

Lymph nodes and top histological layers of male inguinal region.

Dermis reflected to display subcutaneous adipose tissue on right side, and fascia superficialis on the left.

Drawings of the Anatomy of the Groin; with Anatomical Remarks. W. Darrach, M.D., 1844.

1844 hand-tinted photograph of a dentist. This is thought to be the earliest extant studio photograph of a medical professional. From the Burns Archive