А разве в Южной Америке гомотерия не находили?

Извиняюсь, дочитал статью до конца, про венесуэльские находки есть, только на карте не отмечены.

Отредактировано Dinofelis (21 February 2012 09:26:02)

Mea culpa, спасибо, из виду совсем выпустил, исправить недолго. Просто не хотел отягощать статью излишней инфой, которую особо читать никто не будет - к примеру: более подробные карты местонахождений; фаунистические комплексы хищников плиоцен-плейстоцена, в которых существовал гомотерий; взаимоотношения махайродонтид с гоминидами; опустил ряд размерных таблиц, сделав упор на рассмотрение морфологических особенностей и предполагаемой этологии. А у тех, кого вышеописанное действительно интересует, оно давно в наличии имеется.

Если прайд львов так эффективно охотится на бегемотов, то можно смоделировать и охоту саблезубых, если они жили тоже прайдом, но в этом случае охота саблезуба будет на порядок эффективней!!
http://www.youtube.com/watch?v=5vl9F4NO … re=related

А посткраниальный скелет динофелиса относительно массивнее современных пантер? Если да, то массу его тела я оцениваю примерно в 180 кг.

Source: A. R. Biknevicius; B. Van Valkenburgh; J. Walker; Incisor size and shape: implications for feeding behaviors in saber-toothed “cats”; Journal of Vertebrate Paleontology;
Volume 16, Issue 3, 19 September 1996, Pages 510 - 521


Canids and Sabertooths Have Strongest Incisors

Below is data showing incisor strength in comparison to body size. The first chart gives the bending strength of I1 and I2, the medial incisors or incisors furthest from canines, of numerous extant canids, felids, hyenas, and extinct conical and sabertooth felids. Since incisor strength increases with larger body size, this data should be compared based on similar body sizes. The study uses occipito-orbital length ("OOL"), which is a measure of skull length excluding the snout, and is highly correlated with body size. OOL for the species is listed in the second table. The third chart below graphs anterioposterior I2 bending strength from the first chart against OOL from the second chart (my graph using study data). The trend line is the average of all species and species to the left and above trend line have stronger incisors.

Some key observations:

Canids > hyenas > extant felids in incisor bending strength at similar sizes.
Sabertooths > incisor strength than extant felids at similar sizes
The wolf, AWD, hoplophoneus, and homotherium have the strongest incisors for their body size
Lions have stronger incisors than tigers for their body size
Jaguars have strongest incisors for their body size in extant cats
Clouded leopards have weaker incisors grouping with extant rather than sabertooth cats
Coyote surprisingly had slightly stronger incisors than the dhole. However, dholes have proportionally larger heads than coyotes so dhole may have weighed less than coyote given similar OOL or skull size.
Bobcat and pseudaelurus have very weak incisors for their body size

In addition, the authors also use another measure of incisor robustness, cross-sectional area or shear strength, and have similar findings. The graph below shows I3 (incisor next to canine) and I2 (incisor between I3 and I2) cross-sectional area or shear strength plotted against OOL. I3 is stronger than I2 in all species since I3 does not receive as much support from adjacent incisors as I2 and therefore must be stronger. Canid incisors generally exceed hyenas who generally exceed extant felids in shear strength. Sabertooth incisors generally exceed extant felids in shear strength, but are generally below extant canids. Homotherium, Hoplophoneus, Barbourofelis morrissi, and Dinofelis score high for extinct felids and have large incisor cross-sectional areas.

Unfortunately, the curvature of extant families, but not most extant species, is provided in this study. However, the gray fox is mentioned as having the most curved incisor arrangement while the jaguar has the least curved arrangement. Also, the CL is mentioned as having a less curved incisor arrangement and the lion has the most curved incisor battery of extant felids.While the gray fox could theoretically produce a large bite wound, this is offset by its very weak incisors and bite. Similarly, the jaguar would produce a smaller wound for its size, but its strong incisors and powerful bite allow it to inflict devastating injuries. These are good examples to remember to consider this data in conjunction with other information.

The following graph (parts A and B) illustrates the incisor battery curvature for extant canid, hyena, and felid families along with extinct felid and nimravid species. As the graph shows, canids have the most curved incisors arrangements followed by hyenas and extant felids. Hoplophoneus and Barbourofelis morrissi have the most curved incisors batteries among extinct felids and nimravids.

Ареал распространения динофелиса:

Да + еще Индия

shish02 :

Да + еще Индия

+Пакистан (Сивалик)
и далее:
  + Китай (Хэнань) - Dinofelis abeli (D. cristata)
  + Этулия (Гагаузия) - на карте тоже не захвачено, хотя, как я понял, на карте - объединённые предполагаемые ареалы D. barlowi, D. cristata и D. diastemata

Ксеносмил.


Какие короткие ступни у него...


Парамахайрод.

rom left to right: Hoplophoneus Occidentalis - Barbourofelis Fricki - Panthera Leo Atrox - Homotherium (serum?)

Супер-рисунок ксеносмила!:-)




И заодно нимравус.

shish02 :

Кот :

Ареал распространения динофелиса:
http://upload.wikimedia.org/wikipedia/c … _range.png

А куда делась Северная Америка?

Да там вообще карта мира без Америки - мечта Задорнова

Скорее всего не анатом картинку делал.

По кольцам на клыках саблезубов можно определить их возраст.

Перевод статьи ''Hodnett J-P, 2010. A Machairodont felid (Mammalia; Carnivora; Felidae) from the latest Hemphillian (Late Miocene/Early Pliocene) Bidahochi Formation, northeastern Arizona. PaleoBios,29(3)'' от Андрея
Ходнетт 2010. Махайродонт из позднехемфильской формации Бидахочи.pdf