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Nature · Upper AMNH species length reference

How long is a apatosaurus louisae?

The American Museum of Natural History gives Apatosaurus louisae a length range of 22 to 24 meters. This scene selects the upper end of that species reference.

Apatosaurus louisae, Upper AMNH species length reference. Upper AMNH species length reference · approximately 24 meters: 24 meters, illustrative estimate.
Interpretive restoration. Extended snout-to-tail horizontal length is calibrated; internal proportions, soft tissues and coloration are illustrative.

24 m

Sourced measurement
Measurement
Upper AMNH species length reference · approximately 24 meters
Subject or version
Upper AMNH species length reference
Using this value
A starting value for the illustration, not a universal or confirmed height.
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A little more perspective

AMNH’s species facts list 22 to 24 meters long. The selected 24 meters is the upper end of that range, not an independently measured maximum or the exact length of the museum’s steel-and-fiberglass biomechanics model.

The extended neck and complete whip-like tail make whole-body length visible. The thick neck and robust torso distinguish this restoration from the slimmer Diplodocus. Soft tissues, skin and internal segment proportions are interpretive; the horizontal measurement does not specify standing height.

Quick facts

The American Museum of Natural History gives Apatosaurus louisae a length range of 22 to 24 meters. This scene selects the upper end of that species reference.

For a presentation or a research note, include the subject, the measurement definition, and the assumed measurement. A picture alone cannot explain those choices. The comparison guide explains how to export an image and its source notes together.

Sources and measurement notes

Twenty-four meters is the upper end of a museum species-length range.

Source review recorded . Maintained by Ishan Karunaratne. Suggest a correction with a source and the exact measurement being compared.

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