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File:Partial mosasaur jaw.jpg

Original file (3,152 × 1,847 pixels, file size: 1.91 MB, MIME type: image/jpeg)

Summary

Description

Recovered from a phosphate mine in western Morocco, probably near Khouribga. I bought two of these at the Tucson show around 20 years ago. If someone knows the species, please post a note! US 5c. coin for scale. Mine might be a juvenile M. beaugei (?).

Teeth are in good condition and bone less so, as is usual for specimens from here, Teeth curve back towards the gullet, to hold the prey, and the teeth interlace on the full jaw.
Date
Source Partial mosasaur jaw
Author Peter D. Tillman from USA
Camera location35° 32′ 54.39″ N, 121° 04′ 55.67″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo


This image has currency in it to indicate scale.

Using coins for scale is discouraged as it will require people unfamiliar with them to look up the dimensions or guess, both of which defeat the purpose of the object in the first place. Coins can also reinforce a geographical bias, and some coins' designs are copyrighted.

Ideally, a photograph should include a ruler with the subject (example) or an added scale marking. SI ("metric") units are the most commonly used worldwide (see meter and centimeter).

Images with coins to indicate scale

Common coin diameters for reference:

  • U.S. dollar (as of?):
    • 1¢: 19.05 mm, 0.75 in
    • 5¢: 21.21 mm, 0.84 in
    • 10¢: 17.91 mm, 0.71 in
    • 25¢: 24.26 mm, 0.94 in
    • 50¢: 30.61 mm, 1.22 in
    • $1: 26.5 mm, 1.02 in
  • Canadian dollar (as of?):
    • 1¢: 19.05 mm, 0.75 in
    • 5¢: 21.2 mm, 0.83 in
    • 10¢: 18.03 mm, 0.71 in
    • 25¢: 23.88 mm, 0.94 in
    • 50¢: 27.13 mm, 1.07 in
    • $1: 26.5 mm, 1.02 in
    • $2: 28 mm, 1.1 in
  • Pound sterling as of 2021:
    • 1p: 20.32 mm, 0.8 in
    • 2p: 25.91 mm, 1.02 in
    • 5p: 18 mm, 0.71 in
    • 10p: 24.5 mm, 0.96 in
    • 20p: 21.4 mm, 0.84 in
    • 50p: 27.3 mm, 1.07 in
    • £1: 23.03–23.43 mm, 0.91–0.92 in
    • £2: 28.4 mm, 1.12 in
  • Euro as of 2002:
    • 1c: 16.25 mm, 0.64 in
    • 2c: 18.75 mm, 0.74 in
    • 5c: 21.25 mm, 0.84 in
    • 10c: 19.75 mm, 0.78 in
    • 20c: 22.25 mm, 0.88 in
    • 50c: 24.25 mm, 0.95 in
    • €1: 23.25 mm, 0.92 in
    • €2: 25.75 mm, 1.01 in

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Licensing

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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This image was originally posted to Flickr by Pete Tillman at https://flickr.com/photos/29050464@N06/45763028224 (archive). It was reviewed on 27 December 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

27 December 2018

Captions

Partial mosasaur jaw, perhaps a juvenile M. beaugei (?). Western Morocco.

Items portrayed in this file

depicts

coordinates of the point of view

35°32'54.388"N, 121°4'55.672"W

inception

26 December 2018

exposure time

0.00833333333333333333 second

focal length

4.15 millimetre

media type

image/jpeg

File history

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Date/TimeThumbnailDimensionsUserComment
current16:15, 27 December 2018Thumbnail for version as of 16:15, 27 December 20183,152 × 1,847 (1.91 MB)TillmanTransferred from Flickr via #flickr2commons

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