ካርድ ዳይኖሰር ቁ. 1489 ካብ 2 027

Protoichthyosaurus

ትርጉም ስሙ: “first fish lizard”1

ይበልዕ ነበረ: ስጋኢክቲዮሰራትመጀመርታ ጁራሲክብቴክኒክ ዳይኖሰር ኣይኮነን

Protoichthyosaurus was an ancient marine reptile that looked like a dolphin with a long snout and flippers. It swam in the warm, shallow seas that covered parts of England during the Early Jurassic, about 200 million years ago.1

ደስ ዝብል ሓቂ: እዚ ናይ ባሕሪ ተሳሓባይ ዳይኖሰራት ኣብ ምድሪ ክኸዱ ከለዉ ይሕምብስ ነበረ። ኩሉ ሰብ ዳይኖሰር ይብሎም፣ ግን ካልእ ጨንፈር ተሳሓብቲ እዮም ነይሮም።

ዝነበረሉ

ቅድሚ 201 ክሳብ 184 ሚልዮን ዓመት4

መጀመርታ ጁራሲክ

ፎሲላት ዝተረኽቡሉ

England (Dorset, Somerset, Nottinghamshire, Leicestershire, Warwickshire, Glamorgan in Wales) and possibly Switzerland1

ንውሓት

2 ክሳብ 4 m (6.6 ክሳብ 13 ft)1

ዝለዓለ ቅልጣፈ

ኣስታት 48 ኪ.ሜ/ሰ (30 ማይል/ሰ)

ምሕምባስ, ግምት

መዓስ እዩ ዝነበረ?

ትሪያሲክ

ጁራሲክ

ክሬታሸስ

ቅድሚ 252 ሚልዮን ዓመት20114566፣ እቲ ኣስተሮይድ

ክንደይ ዓቢ ነይሩ?

ክንደይ ነዊሕ ነይሩ?

ከም 4 ኣኽላባት ካብ ኣፍንጫ ክሳብ ጭራ ዝነውሕከም 22 ባናና ተሰሪዑ ዝነውሕንውሓት ዓቢ መሕምበሲ (50 ሜ) ኣብ 3.8 ካልኢት ክሕምብሶ ይኽእል ነበረ

ምሳኻ ክነጻጸር Protoichthyosaurus 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)

Protoichthyosaurus ኣስታት 48 ኪ.ሜ/ሰ (30 mph)

ብጉያ ዝኸይድ ፈረስ ኣስታት 65 ኪ.ሜ/ሰ (40 mph)

ቺታ ኣስታት 100 ኪ.ሜ/ሰ (62 mph)

ዘደንቑ ነገራት

ደስ ዝብሉ ሓቅታት

Protoichthyosaurus was first named in 1979 by Robert M. Appleby, but for a while scientists thought it was just a type of Ichthyosaurus. In 2017, a new study showed it was a separate genus.1

There are two species: P. prostaxalis, which could reach up to 4 metres long, and the smaller P. applebyi, which was at most 2 metres long.1

Its flippers had a special arrangement of wrist bones that helped scientists tell it apart from other ichthyosaurs.1

Protoichthyosaurus had a large, triangular bone in its upper jaw (the maxilla) that stuck out farther than its nasal bones, a unique feature.1

Many of the fossils come from the Charles Moore collection, which sometimes mixed bones from different animals together, making it tricky for scientists.1

Its teeth had deep grooves running down to the roots, and they were firmly anchored in the jaw.1

ብAI ዝተሰርሐ ስእሊ ናይ Protoichthyosaurus — ብAI ዝተሰርሐ ስእሊ፣ Protoichthyosaurus 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 Protoichthyosaurus ብብዝሒ ዝሕተቱ ሕቶታት

?Was Protoichthyosaurus a dinosaur?

No, it was an ichthyosaur, a marine reptile that lived in the sea. Ichthyosaurs are not dinosaurs.1

?How big was Protoichthyosaurus?

It was medium sized. P. prostaxalis reached up to 4 metres (13 ft) long, while P. applebyi was smaller, at most 2 metres (6.6 ft).1

?What did Protoichthyosaurus eat?

Its teeth had deep grooves and were firmly rooted, which suggests it ate fish and other small sea animals, but the sources do not give a specific diet.1

?Where did Protoichthyosaurus live?

It lived in the Early Jurassic seas of southern England and possibly Switzerland. Fossils have been found in Somerset, Dorset, and other parts of the UK.1 3

ጽውጽዋይ ዘፍርስ

ጽውጽዋይ: Protoichthyosaurus is a dinosaur.

ሓቂ: It is not a dinosaur. It is an ichthyosaur, a group of marine reptiles that lived in the sea at the same time as dinosaurs.1

ንክኢላታት ዳይኖሰር

ሳይንሳዊ ስም: Protoichthyosaurus
ዝሰመዮ: Appleby 19794
ጉጅለ: ኢክቲዮሰራት
ስድራ / ክላድ: Ichthyosauridae4
ምድባ: Ichthyosauria > Ichthyosauromorpha4
ዕድመ እቶም ኣኻውሕ: 201 ክሳብ 184 ሚልዮን ዓመት (Hettangian / Pliensbachian)4
ናይ ኣኻውሕ ንብርብራት: Blue Lias4
ሃገራት: ዓባይ ብሪጣንያ4
መዛግብቲ ፎሲል: 2 ኣብ The Paleobiology Database4
ርኽበት: Robert M. Appleby named Protoichthyosaurus in 1979 based on fossils from Street, Somerset, England. The main specimen (BRLSI M3553) is a partial skeleton.1 2
ገና ዘከራኽር: Scientists are not sure if a third species, P. fortimanus, is really a separate species or just another name for one of the other two.1