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THREAD: The Flightless Auks of the Pacific
1/?: The great auk is the only flightless bird in the North Atlantic, and its Latin name, Pinguinus, alludes to their iconic ecology. However, unbeknownst to most, there is a second line of extinct grounded auks called Mancallinae. These birds are known from fossil remains found in both ends of the North Pacific, ranging from the Miocene to the Late Pleis
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Phylogenetic analyses suggest that the Mancallinae was a stem clade of the auks (Alcidae) and evolved flightlessness independently of the great auk. Based on their morphology, the Mancallinae were most likely piscivorous diving birds. The extinction of this clade is not well understood; however, it is certainly possible they survived until the terminal Pleistocene extinctions of Japan and Nort
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NEW on The Extinctions - Horned Tortoises, White Swamphens, Giant Stick Insects and more! Lord Howe Island boasted a unique assemblage of species - much diminished today. What caused the demise of the rich biodiversity of the island? Find out below!
https://www.theextinctions.com/articles-1/lord-howe
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And what of the incident with the tortoises? The remains do not show evidence of healing, suggesting that injuries were either the cause of death or inflicted post-mortem. Unfortunately, we can’t say which. Nevertheless, Aldabrachelys would appear a likely food source for large crocodilians on the island, even if this instance constituted scavenging.
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THREAD: The Flightless Auks of the Pacific
1/?: The great auk is the only flightless bird in the North Atlantic, and its Latin name, Pinguinus, alludes to their iconic ecology. However, unbeknownst to most, there is a second line of extinct grounded auks called Mancallinae. Thes…
3/4
Phylogenetic analyses suggest that the Mancallinae was a stem clade of the auks (Alcidae) and evolved flightlessness independently of the great auk. Based on their morphology, the Mancallinae were most likely piscivorous diving birds. …
2/? A long list of taxa was erected within Mancallinae, but a re-examination by Smith in 2011 has recognized two distinct genera: Mancalla and Miomancalla. Mancalla is further divided into several species, while Miomancalla can be split in…
NEW on The Extinctions - Pachyderms, Power, & Politics: The history of the elephant in Northeastern Africa.
In this guest-article by Reginald O'Donoghue, explore the history of elephants in the ancient milieu of the Nile and the lands bel…
NEW on The Extinctions - Horned Tortoises, White Swamphens, Giant Stick Insects and more! Lord Howe Island boasted a unique assemblage of species - much diminished today. What caused the demise of the rich biodiversity of the island? Find …
Horned tortoises, white swamphens, giant stick insects and more! Lord Howe Island boasted a unique assemblage of species - now mostly vanished… What caused this collapse? Our new article explores this topic - available now for our Patrons!…
NEW on The Extinctions - Adam's Kindred: Neanderthals, Denisovans, island dwarfs and how our ancestors became the last men standing
https://www.theextinctions.com/articles-1/first-and-last-men-part-i-adams-kindred
Todays article has unfortunately been delayed, we will endeavour to have it ready as soon as possible! We don’t dare give an exact timeframe of when it will be released, but hopefully in a week or so.
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And what of the incident with the tortoises? The remains do not show evidence of healing, suggesting that injuries were either the cause of death or inflicted post-mortem. Unfortunately, we can’t say which. Nevertheless, Aldabrachely…
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The large crocodile Voay robustus occurred on nearby Madagascar and Nile crocodiles are capable of crossing stretches of saltwater. Either could fit the bill. There is also the possibility of a new species. The most likely explanatio…
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The remains found at the pond are larger, belonging to one or more specimens estimated between 2.9 and 3.7m in length. Furthermore, the morphology appeared to be more robust than A. dilophus. Unfortunately, the evidence is fragmented…
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