ካርድ ዳይኖሰር ቁ. 0801 ካብ 2 027

Hesperornis

ትርጉም ስሙ: “western bird”1

ይበልዕ ነበረ: ዓሳቀዳሞት ኣዕዋፍዳሕራይ ክሬታሸስ

Hesperornis was a giant swimming bird that lived in the time of dinosaurs. It had teeth in its beak and could not fly, but it was a super diver in the ancient seas.1 2

ዝነበረሉ

ቅድሚ 90 ክሳብ 66 ሚልዮን ዓመት5

ዳሕራይ ክሬታሸስ

ፎሲላት ዝተረኽቡሉ

North America (Kansas, Montana, South Dakota, Alaska, Canada), Russia, and Sweden5 1

ንውሓት

1.5 ክሳብ 1.8 m (4.9 ክሳብ 5.9 ft)1

ክብደት

10.6 kg (23 lb)1

ቁመት

0.81 m (2.7 ft)

ግምት

ዝለዓለ ቅልጣፈ

ኣስታት 16 ኪ.ሜ/ሰ (10 ማይል/ሰ)

ምሕምባስ, ግምት

መዓስ እዩ ዝነበረ?

ትሪያሲክ

ጁራሲክ

ክሬታሸስ

ቅድሚ 252 ሚልዮን ዓመት20114566፣ እቲ ኣስተሮይድ

ክንደይ ዓቢ ነይሩ?

ክንደይ ነዊሕ ነይሩ?

ቁመቱ ክንደይ ነይሩ?

ግምት

ክንደይ ከቢድ ነይሩ?

ከም 2.5 ኣናሙ ገዛ ዝኸብድ

ከም 4 ኣናሙ ገዛ ካብ ኣፍንጫ ክሳብ ጭራ ዝነውሕከም 10 ባናና ተሰሪዑ ዝነውሕከም 88 ባናና ዝኸብድንውሓት ዓቢ መሕምበሲ (50 ሜ) ኣብ 11 ካልኢት ክሕምብሶ ይኽእል ነበረ

ምሳኻ ክነጻጸር Hesperornis ክንደይ ዓቢ ነይሩ?

ኣብ ብራውዘርካ ቀሊል ሕሳብ ጥራይ። ዝዕቀብ ወይ ናብ ዝኾነ ቦታ ዝለኣኽ የለን።

ክንደይ ቅልጡፍ ነይሩ?

ዝኸይድ ሰብ ኣስታት 5 ኪ.ሜ/ሰ (3 mph)

ብሽክለታ ዝጋልብ ቆልዓ ኣስታት 12 ኪ.ሜ/ሰ (7 mph)

Hesperornis ኣስታት 16 ኪ.ሜ/ሰ (10 mph)

ብጉያ ዝኸይድ ፈረስ ኣስታት 65 ኪ.ሜ/ሰ (40 mph)

ቺታ ኣስታት 100 ኪ.ሜ/ሰ (62 mph)

ዘደንቑ ነገራት

ደስ ዝብሉ ሓቅታት

Hesperornis was one of the first birds to give up flying and become a full-time swimmer.2

Its legs were placed far back on its body, like a loon, making it clumsy on land but a powerful diver.1

Hesperornis had teeth in its beak, which is rare for birds. It used them to catch fish.1 2

The first fossils of Hesperornis were found by famous fossil hunter Othniel Charles Marsh in 1870 in Kansas.1 2

Several species of Hesperornis lived from about 90 to 66 million years ago, during the Late Cretaceous.5

Hesperornis fossils have been found in many places, including Canada, the United States, Russia, and Sweden.5

ብAI ዝተሰርሐ ስእሊ ናይ Hesperornis — ብAI ዝተሰርሐ ስእሊ፣ Hesperornis ከመይ ይመስል ከም ዝነበረ ዘርኢ፣ ኮምፒተር ካብቲ ሳይንቲስታት ዝፈልጥዎ ዝሰርሖ። ግምት እዩ: እቲ ሓቀኛ እንስሳ ፍልይ ዝበለ ክመስል ይኽእል፣ ሓቀኛ ሕብሩ ድማ ዝፈልጦ የለን።

ንስኻ ሓቲትካ

ብዛዕባ Hesperornis ብብዝሒ ዝሕተቱ ሕቶታት

?How big was Hesperornis?

About 1.5 to 2 metres (4.9 to 6.6 ft) long and weighed around 10.6 kilograms (23 lb).1

?Did Hesperornis have teeth?

Yes, it had teeth in its beak, which is rare for birds. The teeth sat in a groove, not in individual sockets.1

?Could Hesperornis fly?

No, it could not fly. Its wings were tiny and useless for flight, and its breastbone lacked a keel for flight muscles.1 3

?What did Hesperornis eat?

It ate fish, which it caught with its tooth-lined beak while diving in the sea.4

?When did Hesperornis live?

It lived during the Late Cretaceous period, about 83.6 to 72 million years ago, and possibly into the early Maastrichtian.1

?Where was Hesperornis found?

Fossils have been found in Kansas, Canada, Russia, Sweden, and other places, mostly in marine rocks.1

?Could Hesperornis walk on land?

It was clumsy on land. Its legs were placed far back, so it probably pushed itself along on its belly like a seal.1

ጽውጽዋይ ዘፍርስ

ጽውጽዋይ: Some people think Hesperornis was a dinosaur.

ሓቂ: Hesperornis was a bird, not a dinosaur. Birds evolved from dinosaurs, but Hesperornis itself is classified as a bird.1

ንክኢላታት ዳይኖሰር

ሳይንሳዊ ስም: Hesperornis
ዝሰመዮ: Marsh 18725
ጉጅለ: ቀዳሞት ኣዕዋፍ
ስድራ / ክላድ: Hesperornithidae5
ምድባ: Theropoda > Avialae5
ዕድመ እቶም ኣኻውሕ: 90 ክሳብ 66 ሚልዮን ዓመት (Coniacian / Maastrichtian)5
ናይ ኣኻውሕ ንብርብራት: Pierre Shale, Rybushka, Niobrara5
ሃገራት: ካናዳ, ኣመሪካ, ሩስያ, ሽወደን5
መዛግብቲ ፎሲል: 65 ኣብ The Paleobiology Database5
ብኻልእ ስም: Coniornis, Hargeria, Lestornis (ዝኣረጉ ኣስማት ሕጂ ከም ሓደ እንስሳ ይቑጸሩ)5
ርኽበት: Othniel Charles Marsh discovered the first Hesperornis fossil in 1870 near the Smoky Hill River in Kansas. He named it Hesperornis regalis in 1872.1 2
ገና ዘከራኽር: Scientists are still debating exactly how many species of Hesperornis existed, because many fossils are incomplete.1