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Skin and Bones: Inside Baby Mammoths

Lyuba's legs

baby mammoth lyuba leg bones

(Image credit: University of Michigan Museum of Paleontology)

CT images showing Lyuba’s hind legs (top left) and front legs (top right). Bone shafts that are already well-hardened are white, and poorly mineralized ends of bones are brown. Blue dots within leg bones represent an iron phosphate mineral that follows the location of iron stores related to hemoglobin production while the calf was alive. At bottom is a CT scan of Lyuba’s developing left humerus, or upper arm bone.

Khroma and Lyuba

lyuba and khroma mammoth skulls ct scanned

(Image credit: University of Michigan Museum of Paleontology)

Khroma was about 2-months old and Lyuba was just 1-month old when she died. Yet Khroma's brain was smaller at her death than the typical newborn elephant, suggesting mammoths had different developmental trajectories than elephants.

Mud inhalation

scan of khroma the mammoth's trachea

(Image credit: University of Michigan Museum of Paleontology)

Though Krhoma's cause of death was originally a mystery, the new analysis suggests that she suffocated on mud, just like Lyuba.

Cause of death revealed

ct scans of lyuba the mammoth

(Image credit: University of Michigan Museum of Paleontology)

Here, an up-close look at the viscous mud that suffocated Lyuba. She initially got the mud stuck in her trachea after crashing through an icy lake and doing a face plant in the muddy bottom. An effort to dislodge it only wound up pushing it into her trunk and lungs.