That fang in Vincelestes has two roots
If so,
that oversize fang in Early Cretaceous Vincelestes (Fig 1) is not a canine, because it has two roots, like a premolar – and the canine is absent (= smaller than a vestige). Comparable taxa with a typical one-root canine fang and more typical (= higher) tooth counts are shown alongside to scale.
Figure 1. A µCT scan of Vincelestes compared to a diagram of Vincelestes created by Rougier, Wible and Hopson 1992.
” data-medium-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/09/alcidedorbignya-vincelestes588.gif?w=77″ data-large-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/09/alcidedorbignya-vincelestes588.gif?w=264″ tabindex=”0″ role=”button” class=”size-full wp-image-88803″ src=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/09/alcidedorbignya-vincelestes588.gif” alt=”Figure 1. A µCT scan of Vincelestes compared to a diagram of Vincelestes created by Rougier, Wible and Hopson 1992.” width=”584″ height=”2264″ />
Figure 1. A µCT scan of Vincelestes compared to a diagram of Vincelestes created by Rougier, Wible and Hopson 1992.
Vincelestes neuquenianus
(Bonaparte 1986, Rougier, Wible and Hopson 1992, Early Cretaceous, 130 mya). Although Vincelestes is ancient and therefore primitive, the hyper-enlarged premolar fangs, loss of the canine, small tooth count and short rostrum indicate a highly derived taxon. Nine individuals are known. Skeleton is probably a chimaera of several specimens and the degree of completion is unknown. The tail is extraordinarily long and provided with deep chevrons. µCT scan of the skull mage from Digimorph.org and used with permission.
Figure 2. Above: Dromiciops skull and tooth row (right rotated). Below: Glironia skull and tooth row (right, rotated).
” data-medium-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/08/glironia_venusta588-2.jpg?w=163″ data-large-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/08/glironia_venusta588-2.jpg?w=558″ tabindex=”0″ role=”button” class=”size-full wp-image-88629″ src=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2024/08/glironia_venusta588-2.jpg” alt=”Figure 2. Above: Dromiciops skull and tooth row (right rotated). Below: Glironia skull and tooth row (right, rotated).” width=”584″ height=”1073″ />
Figure 2. Above: Dromiciops skull and tooth row (right rotated). Below: Glironia skull and tooth row (right, rotated).
By convergence
a premolar fang is also present in Glironia (Fig 2), shown earlier here.
References
Bonaparte JF 1986. Sobre Mesungulatum houusayi y nuevos mamíferos Cretácicos de Patagonia, Argentina [On Mesungulatum houssayi and new Cretaceous mammals from Patagonia, Argentina]. Actas del IV Congreso Argentino de Paleontología y Biostratigrafía 2:48-61.
Rougier GW, Wible JR and Hopson JA 1992. Reconstruction of the cranial vessels in the Early Cretaceous mammal Vincelestes neuquenianus: implications for the evolution of the mammalian cranial vascular system. Journal of Vertebrate Paleontology 2:188–216. https://doi.org/10.1080/02724634.1992.10011449
Source: https://pterosaurheresies.wordpress.com/2024/09/17/that-fang-in-vincelestes-has-two-roots/
Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.
"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world. Anyone can join. Anyone can contribute. Anyone can become informed about their world. "United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
LION'S MANE PRODUCT
Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules
Mushrooms are having a moment. One fabulous fungus in particular, lion’s mane, may help improve memory, depression and anxiety symptoms. They are also an excellent source of nutrients that show promise as a therapy for dementia, and other neurodegenerative diseases. If you’re living with anxiety or depression, you may be curious about all the therapy options out there — including the natural ones.Our Lion’s Mane WHOLE MIND Nootropic Blend has been formulated to utilize the potency of Lion’s mane but also include the benefits of four other Highly Beneficial Mushrooms. Synergistically, they work together to Build your health through improving cognitive function and immunity regardless of your age. Our Nootropic not only improves your Cognitive Function and Activates your Immune System, but it benefits growth of Essential Gut Flora, further enhancing your Vitality.
Our Formula includes: Lion’s Mane Mushrooms which Increase Brain Power through nerve growth, lessen anxiety, reduce depression, and improve concentration. Its an excellent adaptogen, promotes sleep and improves immunity. Shiitake Mushrooms which Fight cancer cells and infectious disease, boost the immune system, promotes brain function, and serves as a source of B vitamins. Maitake Mushrooms which regulate blood sugar levels of diabetics, reduce hypertension and boosts the immune system. Reishi Mushrooms which Fight inflammation, liver disease, fatigue, tumor growth and cancer. They Improve skin disorders and soothes digestive problems, stomach ulcers and leaky gut syndrome. Chaga Mushrooms which have anti-aging effects, boost immune function, improve stamina and athletic performance, even act as a natural aphrodisiac, fighting diabetes and improving liver function. Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules Today. Be 100% Satisfied or Receive a Full Money Back Guarantee. Order Yours Today by Following This Link.
| Online: | |
| Visits: | 1,640,087,620 |
| Stories: | 8,249,280 |
Whistler Blowers, Insiders
