Baptanodon - Baptanodon

Baptanodon
Vaqtinchalik diapazon: Kech yura, 160–156 Ma
Baptanodon plitasining osteologiyasiga oid Gilmor yozuvlari XXXVI.png
Ilmiy tasnif e
Qirollik:Animalia
Filum:Chordata
Sinf:Reptiliya
Buyurtma:†Ixtiozauriya
Oila:†Oftalmosauridae
Subfamila:†Oftalmosaurinlar
Tur:†Baptanodon
Marsh, 1880
Turlar
Sinonimlar
  • Sauranodon Marsh, 1879 (band)
  • Mikrodontosaurus Gilmor, 1902 yil

Baptanodon bu ichthyosaur ning Kech yura juda katta ko'zlari uchun nomlangan davr (160-156 million yil oldin). Uzunligi 6 metr (19,5 fut) delfin shaklidagi tanasi bor edi va deyarli tishsiz jag'i kalmarni tutish uchun juda moslashgan edi. Ushbu turdagi asosiy qazilma topilmalar qayd etilgan Shimoliy Amerika.

Kashfiyot va turlar

Baptanodon a deb hisoblanadi kichik sinonim ning Oftalmosaurus Maisch & Matzke tomonidan (2000).[1] Biroq, 2010-yillarda nashr etilgan kladistik tahlillar shuni ko'rsatmoqda Baptanodon bilan tug'ma emas Oftalmosaurus icenicus.[2][3][4]

Tasnifi

Quyidagi kladogramma Fischerga tegishli va boshq. 2012.[3]

Thunnosauria  
 

Ixtiozaurus

 
 
 

Stenopterygius

 
 
 

Chakaykozavr

 
 Oftalmosauridae  
 

Artropterygius

 
*
 Oftalmosaurinlar  
 

Mollesaurus

 
 
 

Oftalmosaurus

 
 
 

Baptanodon

 
 

Akamptonektlar

 
 
 
 
 Platypterygiinae  
 
 

Brachypterygius

 
 
 

Maiaspondilus

 
 
 

Eggirozavr

 
 

Sveltonektlar

 
 
 
 
 
 

"Platypterygius "hercynicus

 
 
 

Kaypullisaurus

 
 
 

Athabascasaurus

 
 

"Platypterygius "australis (=Longirostriya)[5]

 
 
 
 
 
 
 
 
 
 

Paleobiologiya

Qoldiqlar Baptanodon Oksfordi davrida topilgan Sundance shakllanishi Vayomindan kelib chiqqan bo'lib, u ham kriptoklididlarning qoldiqlarini olib kelgan Tatenektlar va Pantosaurus va pliosaurid Megalneusaurus.[6][7]

Shuningdek qarang

Adabiyotlar

  1. ^ Maisch MW, Matzke AT. 2000. Ixtiozauriya. Stuttgarter Beiträge zur Naturkunde B Seriya (Geologie und Paläontologie) 298: 1-159.
  2. ^ Patrik S. Druckenmiller va Erin E. Maksvell (2010). "Clearwater Formation, Alberta, Kanadaning yangi quyi bo'r (quyi Albian) ichthyosaur turi". Kanada Yer fanlari jurnali. 47 (8): 1037–1053. Bibcode:2010CaJES..47.1037D. doi:10.1139 / E10-028.CS1 maint: mualliflar parametridan foydalanadi (havola)
  3. ^ a b Valentin Fischer; va boshq. (2012). "Evropaning quyi bo'r davridan yangi oftalmosaurid ichtiyozavrlari yura-bo'r chegarasi bo'ylab ichtiozaurlarning keng omon qolishlarini namoyish etishmoqda". PLOS ONE. 7 (1): e29234. Bibcode:2012PLoSO ... 729234F. doi:10.1371 / journal.pone.0029234. PMC  3250416. PMID  22235274.
  4. ^ Ilariya Paparella; Erin E. Maksvell; Anjelo Cipriani; Scilla Roncacè; Maykl V. Kolduell (2017). "Umbriya-Marchean Apennines (Marche, Markaziy Italiya) ning yuqori yurasidan birinchi oftalmosaurid ichthyosaur". Geologik jurnal. 154 (4): 837-858. doi: 10.1017 / S0016756816000455.
  5. ^ Arxangel'skiy, M. S., 1998, Ixtiozaurian Genus Platypterygius to'g'risida: Paleontologik jurnal, 32-jild, n. 6, p. 611-615.
  6. ^ Marsh, O. C., 1880, Sauranodon haqida eslatma: American Journal Journal, 3-seriya, 19-jild, n. 4, p. 491.
  7. ^ Marsh, O. C., 1895, Baptanodon yotoqlarining sudraluvchisi: American Science Journal, 3-seriya, 34-jild, n. 299, p. 405-406.