Jun
banner
jun075.bsky.social
Jun
@jun075.bsky.social
絵や図表を作るコミュ障、独特な鋏角類やラディオドンタ類を嗜む節足動物厨
An introvert illustrator and arthropod enjoyer. Mainly fond of unique chelicerates and radiodonts.
詳細/Details:http://twpf.jp/ni075
Pinned
身分証明写真。
Reposted by Jun
科学者による復元が尤もらしく見えるのはどういう場合か,それが荒唐無稽な復元と区別されないのはなぜか,どうして「どうせ想像でしょ」「よくわかんないけど科学者がそう言ってるんだからそうなんでしょ」と言い捨てられてしまうのか,どんな説明が足りないのか,ということにもう少し注意が払われてもいいと思うんですけども.
December 22, 2025 at 3:19 AM
Reposted by Jun
がろあむし(あえてのひらがな表記)(伝わるかな)
負の走光性というのか、掘り出すとめちゃくちゃ逃げ惑ってほんとに撮るの難しいんですけど、この個体はなぜかじーーーっとしてモデルさんになってくれました。ほんとうにかわいい、好き昆虫………。
December 20, 2025 at 4:05 PM
Reposted by Jun
尾索動物の最終共通祖先はホヤ類様の固着性の成体を持っていたが,浮遊性の成体を持つ最も基盤的な尾索動物オタマボヤ類は,二次的に成体が浮遊性に変化したという仮説が支持されています!!
Fabregà-Torrus et al. (2025 preprint, 12月 Dec.)
「ミオシン重鎖遺伝子の重複・喪失および尾部筋細胞アイデンティティの多様化によって形作られた,尾索動物の生活様式の進化 ― ワカレオタマボヤからの洞察」
Evolution of Tunicate lifestyles shaped by Myosin heavy chain gene duplications, losses, and the diversification of tail muscle cell identities in Oikopleura dioica
December 21, 2025 at 6:32 PM
Reposted by Jun
Retallack (2025, 12月 Dec., Australian Journal of Earth Sciences)(オープンアクセス open access)
Comment on ‘The Ediacaran aquarium: insights from the Nilpena Ediacara National Park 1T-F marine ecosystem (Ediacara member, Rawnsley Quartzite)’ by Weyland and Droser (2025)
doi.org/10.1080/0812...
December 21, 2025 at 6:39 PM
Reposted by Jun
Trilobites had pairs of legs at each segment. There were spiny walking legs and feathered swimming gill legs.

#12DaysofFossils
December 18, 2025 at 9:08 PM
Reposted by Jun
Here's the 5th specimen to keep with the theme. 😁

This is how I found this Triarthrus eatoni in the field and then after prep. These are very difficult trilobites to prepare because the pyrite is so soft. Low pressure micro-abrasion and patience is required.

#12DaysofFossils
December 18, 2025 at 9:08 PM
ノロミジンコ!
December 21, 2025 at 3:11 PM
Reposted by Jun
Yesterday @shimakiron.bsky.social took me to the Lake Biwa museum and it was absolutely fascinating to learn about this ancient lake, the largest freshwater lake in Japan. They had everything from fish to invertebrates, parasites, plants, fossils and giant salamanders.
December 20, 2025 at 10:41 PM
Reposted by Jun
I don't recall seeing this anemone before. The transparent top is neat. Also Hygrosoma?, corallamorphs on a rock, & sea star. @schmidtocean.bsky.social dive 882 #argentiniandeepseeps #MarineLife #CONICET
December 20, 2025 at 4:06 AM
Reposted by Jun
Green Diatom Scree 8/2022 20 X 24 inches [50.8 X 61 cm] Colored Pencil on Paper #sciart #gawoski #plankton
December 21, 2025 at 9:02 AM
Reposted by Jun
Oh, just a couple cute little ladybugs with blue eyes 🥰

#Coccinellidae: #Hyperaspsis bigeminata
North Carolina, USA
December 20, 2025 at 9:15 PM
とりあえず学術関連の方々を一通りにリフォロー。
ヅイッダーの本垢は整理が付かないほどの量だったのでここではちゃんと仕分けたいなあ。
December 21, 2025 at 3:03 PM
Reposted by Jun
Buccaspinea cooperi, a hurdiid radiodont from the Cambrian of Utah, known for its large oral-cone mouth that makes up nearly a quarter of its body length.
December 18, 2025 at 8:41 PM
身分証明写真。
December 21, 2025 at 1:25 PM