first_img Sign up for our daily newsletter Get more great content like this delivered right to you! Country P. pinnatomus, too, resembles other fish found nearby—except for those teeth. The fossil is the oldest bony fish known that would have been able to cut flesh out of larger prey, the team reports today in Current Biology. The researchers say it’s a striking example of evolution inventing some of the same tricks twice. The Jura-Museum, Eischstatt, Germany This 150-million-year-old fish (seen as an artist’s illustration) wasn’t named after the piranha for nothing. It apparently used its long, dagger-shaped teeth to slice into other fish, according to a new study, as evinced by the slashed tailfins of some victims found nearby.Researchers first discovered the animal—christened Piranhamesodon pinnatomus (pinnatomus means “fin cutter”)—in 2016 in the same southern German limestone deposits as the famous feathered dinosaur Archaeopteryx. Most other fish in the shallow sea where P. pinnatomus lived had teeth adapted for crushing, not biting or tearing. (Their stomach contents suggest they ate hard-shelled prey such as clams and sea urchins.)The scientists think P. pinnatomus might have used “aggressive mimicry” the way modern-day piranhas do—even though they belong to a different branch of the fish family tree. Piranhas today resemble their more peaceable relatives, allowing them to get close enough to unsuspecting prey that they can tear off a fin. (The attack doesn’t kill the prey, and fins can regrow.) By Gretchen VogelOct. 18, 2018 , 11:00 AM Email Country * Afghanistan Aland Islands Albania Algeria Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia, Plurinational State of Bonaire, Sint Eustatius and Saba Bosnia and Herzegovina Botswana Bouvet Island Brazil British Indian Ocean Territory Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo, the Democratic Republic of the Cook Islands Costa Rica Cote d’Ivoire Croatia Cuba Curaçao Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands (Malvinas) Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Heard Island and McDonald Islands Holy See (Vatican City State) Honduras Hungary Iceland India Indonesia Iran, Islamic Republic of Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Korea, Democratic People’s Republic of Korea, Republic of Kuwait Kyrgyzstan Lao People’s Democratic Republic Latvia Lebanon Lesotho Liberia Libyan Arab Jamahiriya Liechtenstein Lithuania Luxembourg Macao Macedonia, the former Yugoslav Republic of Madagascar Malawi Malaysia Maldives Mali Malta Martinique Mauritania Mauritius Mayotte Mexico Moldova, Republic of Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Norway Oman Pakistan Palestine Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Poland Portugal Qatar Reunion Romania Russian Federation Rwanda Saint Barthélemy Saint Helena, Ascension and Tristan da Cunha Saint Kitts and Nevis Saint Lucia Saint Martin (French part) Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino Sao Tome and Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten (Dutch part) Slovakia Slovenia Solomon Islands Somalia South Africa South Georgia and the South Sandwich Islands South Sudan Spain Sri Lanka Sudan Suriname Svalbard and Jan Mayen Swaziland Sweden Switzerland Syrian Arab Republic Taiwan Tajikistan Tanzania, United Republic of Thailand Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom United States Uruguay Uzbekistan Vanuatu Venezuela, Bolivarian Republic of Vietnam Virgin Islands, British Wallis and Futuna Western Sahara Yemen Zambia Zimbabwe Piranhalike teeth and torn fins reveal ancient fish fight Click to view the privacy policy. Required fields are indicated by an asterisk (*)last_img

Leave a Reply

Your email address will not be published. Required fields are marked *