Gulo, the wolverine, compared to Speothos, the bush dog
Gulo, the wolverine,
(Figs 1–3) is what bears and sabertooths looked like before they evolved greater size.
Figure 1. The extant wolverine, Gulo, and bush dog, Speothos, are relatives in the LRT.
” data-medium-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/gulo_wolverine_invivo_588.jpg?w=245″ data-large-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/gulo_wolverine_invivo_588.jpg?w=584″ tabindex=”0″ role=”button” class=”size-full wp-image-87097″ src=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/gulo_wolverine_invivo_588.jpg” alt=”Figure 1. The extant wolverine, Gulo, and bush dog, Speothos, are relatives in the LRT.” width=”584″ height=”715″ />
Figure 1. The extant wolverine, Gulo, and bush dog, Speothos, are relatives in the LRT.
Speothos, the bush dog,
(Figs 1–3) is what lions, hyaenas and wolves looked like before they evolved greater size, according to the large reptile tree (LRT, 2323 taxa).
Figure 2. Skeletons of the wolverine, Gulo and the bush dog, Speothos.
” data-medium-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/speothos_gulo_skeleton.jpg?w=295″ data-large-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/speothos_gulo_skeleton.jpg?w=584″ tabindex=”0″ role=”button” class=”size-full wp-image-87099″ src=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/speothos_gulo_skeleton.jpg” alt=”Figure 2. Skeletons of the wolverine, Gulo and the bush dog, Speothos. ” width=”584″ height=”594″ />
Figure 2. Skeletons of the wolverine, Gulo and the bush dog, Speothos.
Both share a long list of traits,
including a color scheme (Fig 1) with that odd and distinctive black ventral fur.
Their skeletons and skulls
(Figs 2, 3) likewise share a long list of traits. What they don’t share is location. Wolverines are found all over the Northern Hemisphere. Bush dogs are restricted to South America.
Figure 1. Skulls of the wolverine, Gulo, and the bush dog, Speothos in 3 views.
” data-medium-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/speothos-gulo588.jpg?w=300″ data-large-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/speothos-gulo588.jpg?w=584″ tabindex=”0″ role=”button” class=”size-full wp-image-87101″ src=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/06/speothos-gulo588.jpg” alt=”Figure 1. Skulls of the wolverine, Gulo, and the bush dog, Speothos in 3 views.” width=”584″ height=”584″ />
Figure 1. Skulls of the wolverine, Gulo, and the bush dog, Speothos in 3 views.
Despite obvious similarities,
this may be the first time these two taxa (Figs 1–3) have been linked. In the LRT these two carnivores are separated only by the sabertooth clade with extinct Machaeroides + Hopolophoneus and extant Melursus + Tremarctos at its base.
That means both taxa (Figs 1–3) are late survivors of ancient radiations.
You’ll find genomic cladograms for the clade Carnivora are completely different from the trait-testing in the LRT, partly because gene testing omits fossil taxa. That’s why the LRT was created: to dispel myths generated from untenable genomic analyses.
References
Linnaeus C 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata.
Lund PW 1842. Fortsatte bernaerkninger over Brasiliens uddöde dirskabning.Lagoa Santa d. 27 de Marts 1840. Kongelige Danske Videnskabernes Selskab Afhandlinger 9:1-16.
wiki/Gulo
wiki/Bush_dog – Speothos
Source: https://pterosaurheresies.wordpress.com/2024/08/07/gulo-the-wolverine-compared-to-speothos-the-bush-dog/
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