Step seal

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The footprint of a dog (1) is shorter than that of a red fox (2) in relation to its width, so that the rear ends of the footprints of the middle toes are further forward than the front ends of the footprints of the two outer toes (dashed line ).

A step seal is the imprint of the extremity of a vertebrate animal in soft ground. They may be, depending on the anatomy of the limb to the impression of a complete foot (at sole goers s part), or only the front (st) of the foot (in the toe and top goers ) act. With the help of step seals, the animal species can be determined in the most favorable case, and also the time at which the animal walked there using the status of the step seal.

In the hunting language , Trittsiegel is the technical term for an imprint of the extremities (legs) of various types of game , especially that of the hoofed game . Several footprints behind one another produce a track , whereby such term applies in the Jägersprache especially for ungulates (for other types of game corresponding track or turf ). In general terms, a footprint is also called a footprint , especially when it is an imprint of a human foot . In general terms, both individual footprints and tracks are referred to as footprints .

Fossil footsteps are the subject of research in the field of palichnology .

Distinguishing features

Step seals reflect the anatomy of the feet of their creators in the loaded state. Each track can be assigned to a specific species. For example, footsteps from ungulates differ significantly from z. As those of predatory mammals by most ungulates to the top goers are only one or two dominant toes footprints left while in mammalian predators, most of which his toes , usually four toes and a are bales are footprints. Within the predatory mammals, a further distinction can be made whether there are claws or the position of the toes in relation to each other and to the ball of the foot.

The imprint results from the interaction of weight per area and the type of subsoil (also called substrate , e.g. earth , pure sand , snow ). The softer the substrate, the deeper the impression, the finer-grained the substrate, the clearer and sharply defined the impression. An imprint changes depending on the environmental conditions (e.g. precipitation and temperature). Only under favorable conditions can the tread seals be retained for a long time.

With a plaster cast , a step seal can be depicted and preserved in three dimensions.

Selection of step seals with their characteristics

Notes: In the measurements, the front paw is abbreviated as VP, the rear paw as HP. The length is measured from the tip of the ball of the longest toe to the rear edge of the ball of the sole or heel ball. The width is the widest part of the step seal between the very edges of the ball of the toe.

animal schematic in kind Features (including dimensions)
Domestic cat (predatory mammal) Cat track.svg
Domestic cat footprints.jpg
in coarse, dry sand
  • almost round shape
  • four easily visible toe pads
  • retractable claws rarely visible
  • triangular or kidney-shaped main ball
  • Circle 2.5 - 4.5 cm in diameter
Eurasian lynx (predatory mammal) Lynx footsteps in the snow.jpg
  • almost round shape
  • four easily visible toe pads
  • retractable claws rarely visible
  • Diameter 6 - 9 cm
Domestic dog (predatory mammal) Canis lupis track.svg
Step seal dog 1.jpg
in moist sandy-loamy silt
  • large foot cushions
  • four toe pads, close to the foot pads
  • Relatively round impression, it is not possible to draw a cross
  • The distance between the impressions of the tips of the claws and the balls is smaller than that of the wolf
  • Variable formats in length and width
Fox (predatory mammal)
Step seal fox 1.jpg
in moist sandy-loamy silt
  • relatively small foot cushions, double- step seals of a lace
  • four toe cushions, the two in the middle lying a little further in front of the foot cushion
  • very narrow impression, cross very possible
  • sharp claw marks
  • Length 5 cm, width 4.5 cm
Badger (predatory mammal)
Meles meles.jpg
in mud
Meles.meles.tracks.on.snow.jpg
in snow
  • wide, kidney-shaped metatarsal pads
  • five toe pads, lying in a slight curve over the metatarsal pads
  • relatively wide footprint
  • large, easily recognizable claw marks
  • Length 5 cm, width 5 - 5.5 cm
Tree marten and stone marten (predatory mammals)
Martes.martes.tracks.jpg
Pine marten trail in the mud
  • five toe pads, not always clearly visible, arranged in comma form around the main pad
  • blurred appearance of the track in the pine marten (due to the thick hair on the underside of the paws)
  • short claws
  • Length 3.5 - 4 cm, width 3 cm (OD)
Polecat (predatory mammal)
  • resembles the trail of martens, but is smaller and narrower
  • five easily visible toe pads, arranged in commas
  • short claws
  • Length 2.5 - 3.5 cm (VP / HP); Width 2 - 2.5 cm
Ermine and weasel (predatory mammals)
  • resembles the track of the marten, but is significantly smaller
  • five ball of the toes rarely well pressed, except on soft ground (very light animal)
  • short claws
  • Ermine: length 1.5 by 2.5 cm, width 1 by 2 cm
  • Mouse weasel: length 1 à 1.5 cm, width 1.5 cm
Lynx (predatory mammal)
  • round, claws not visible (except rarely in steep terrain)
  • Ball of the toes are offset to each other (the two front balls are slightly offset, only one of them touches an imaginary horizontal line)
  • VP 7-9 cm in diameter; HP 7-8 cm in diameter
Wolf (predatory mammal) Huella lobo.svg
Canis lupus tracks.jpg
in dried clayey substrate
  • oblong-oval
  • strong claw prints (aligned straight and clearly visible in the track)
  • HP usually less noticeable (since HP is less stressful)
  • approx. 1 cm longer than wide, impression HP smaller
  • Length (measured without claw marks) 8 - 12 cm (VP), 7 - 11 cm (HP), width 6.5 - 10.5 cm (VP), 5.5 - 9 cm (HP)
Brown bear (predatory mammal)
Bear track.jpg
VP in moist soil
  • Sole walkers with imprints of five toe balls with clearly recognizable claws
  • right and left paws can be easily distinguished
  • VP: short, wide imprint (heel ball is almost always missing), HP: longer than wide, in adult bears length up to 22 cm (often the entire sole of the foot is visible)
  • Size depends on age (for a very young bear it can even be in the area of ​​a roof track.)
Otter (predatory mammal)
  • easily visible toe balls arranged in a semicircle around the main ball of the foot
  • Short blunt claws in direct contact with the ball of the toe
  • Main pad not always visible
  • Length 6 - 7 cm, width 6 cm
beaver
  • Toes and claws do not leave clear marks
  • pointed and armed with claws
  • VP / HP: Imprint of the main balls sometimes clearly visible
  • HP: webbed feet clearly visible on soft ground
  • Length 5 - 7 cm (VP), 12 - 17 cm (HP); Width 4.5 cm (VP), 10 cm (HP)
Nutria
  • Toes, nails and balls of the feet are usually clearly visible
  • Track image with "long fingers", often the dragging track of the tail is also shown
  • VP / HP: main balls often visible
  • HP: 5 ° not webbed (difficult to see)
  • VP: inner toe (thumb) short
  • Length 4.5 - 6 cm (VP), 6 to 7 cm and 11 to 13 cm with heel ball (HP); Width 6 cm (VP), 7 cm (HP)
muskrat
  • elongated, pointed claws
  • Ball of the heel rarely visible
  • VP: 5 ° toes not always visible
  • Ball of the sole in the arches of the toes, not connected to each other (lobed shape of the main ball of the foot).
  • Length 2 - 3 cm (VP), 2.5 - 3.5 cm (HP); Width 3 cm (VP), 5 cm (HP)
racoon
Raccoon fg01.jpg
in soil
  • elongated toes, similar to children's hands
  • Main ball clearly visible
  • Ball of the heel rarely marked (in sitting position)
  • Hind paw often set off next to front paw
  • Length 4 - 6 cm (VP), 4 - 5 cm and 9 - 10 cm with heel ball (HP); Width 7 cm (VP), 6 - 7 cm (HP)
Raccoon dog
  • similar to that of the fox (the toes are, however, much more splayed and the raccoon dog "restricts" much more than the fox)
squirrel
  • right forefoot with four slender toes
  • right hind foot with five slender toes
Hedgehog
Erinaceus.europaeus.tracks.jpg
in soil
  • Toes and claws can usually be seen clearly, only the inner toe often leaves a faint imprint
  • VP has thicker and more splayed toes
  • usually the rear footprint is behind the front footprint
  • Length (VP and HP) about 3.5 cm, width 2.8 cm
Brown hare
Rabbit tracks 1.JPG
in snow
  • 5 toes on the forefoot, of which only 4 are usually visible in the print
  • Imprints of the pointed claws are mostly visible (on very solid ground, often only the claws can be seen, as the soles of the feet are provided with a thick layer of strong, elastic hair)
  • Length about 5 cm (forefoot), 6 cm (rear footprint); Width 3 cm (forefoot), 3.5 cm (rear footprint). Dimensions can vary greatly, however, because in the snow and also when the hare spreads its toes, the prints can become much larger.
Wild rabbit
  • Paw prints are similar to those of the brown hare (however the distances between the groups of tracks and the prints themselves are much smaller)
  • Length (hind track) about 4 cm, width 2.5 cm (comparison with a matchbox: the width of the rabbit track corresponds to the width of a normal matchbox, rabbit track is significantly narrower)
Wild boar (cloven)
090.Trazas de Chabalíns.JPG
in the ground
  • clear prints show 2 shells and behind them 2 dewclaws
  • The imprint of the vessel is wider than that of the bowls
  • Length 3 - 8 cm (without dew claws), width 2.5 - 7.6 cm
Roe deer (cloven-hoofed) Whitetail track.svg
Roe deer track03.jpg
in snow
  • narrow, pointed bowl tips are parallel (at the rear end, however, the bowls are clearly separated from each other)
  • Dew claws (= "fences", little toes pointing backwards) only pressed on the escape track
  • smallest hoofed animal track, length 4 - 5 cm
Red deer (cloven)
Cervus.elaphus.track.on.snow.jpg
in snow
  • The pressed bale makes up about 25-30 percent of the total length
Fallow deer (cloven)
  • The proportion of bales in the seal is around 50 - 60 percent
  • Length approx. 7 - 8 cm (fallow deer), approx. 5 - 6 cm (female); Width 4 - 5 cm (fallow deer), 3 - 4 cm (female)
Muffelwild (cloven)
  • Shells slightly spread on a soft surface, when they escape a strong spread occurs
  • the rear half of the shells is closed together
  • Shells are elongated
  • a business is not visible
Chamois ( even-toed ungulate)
  • Imprints almost square
  • Bowls are further apart than with deer (prevents the snow from sinking too deeply in winter)
  • Like the Alpine Ibex, the sole is as soft as rubber
  • dew claws not visible in the step seal of migrating chamois (they only appear at a distance from the claws of fleeing chamois)
Mallard Tracks duck.gif
Anas platyrhynchos 02 by-dpc.jpg
in the ground
  • the straight middle toe is the longest
  • the outer toes are slightly curved towards the middle toe and are slightly shorter than the middle toe
  • Webbed skins are only visible in very soft ground
Mute swan
  • often more than 15 cm long, bilobed step seals
Greylag goose
Gray geese footprints 2014-06-02 06-13.jpg
in the ground
Gray heron
Step-seal gray heron Mike Krüger 191105.jpg
in the pond floor
  • easily distinguishable from storks by long hind toe prints
  • Three toes point forward, one backward. The back toe is offset slightly inwards. The footprint is a total of 15 to 17 cm long.

Petrified footsteps

Footprints in the rock at Dinosaur Ridge, Morrison Fossil Area, Jefferson County, Colorado

On layers of sediments deposited on the mainland, or rather on the sedimentary rocks that emerged from them, step seals from past geological ages can be passed down from extinct animals (e.g. dinosaurs ). Such fossil footsteps fall under the generic term trace fossils (see also →  tracking sandstone ).

literature

Web links

Commons : Trittsiegel  - Collection of images, videos and audio files

Individual evidence

  1. Ilse Haseder, p. 796
  2. Luchs Bayern EV: Tracking
  3. http://www.dassenwerkgroepbrabant.nl/deutsch/trittsiegel_dachs.html
  4. Archived copy ( memento of the original from March 29, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.jfv.tg.ch
  5. www.wolf-mv.de Who was it? Recognize and document traces and cracks of large predators page 13
  6. https://chwolf.org/woelfe-kennenlernen/monitoring/spurenbeobachtung
  7. http://www.kora.ch/index.php?id=153
  8. http://wildtiere-stadt.wildtiere-bw.de/schaeden/garten/trittsiegel_faehrten/igel.html
  9. http://wildtiere-stadt.wildtiere-bw.de/schaeden/garten/trittsiegel_faehrten/wildkaninchen_feldhase.html
  10. http://wildtiere-stadt.wildtiere-bw.de/schaeden/garten/trittsiegel_faehrten/wildkaninchen_feldhase.html
  11. http://wurzeltrapp.de/wildtiere/das-wildschwein-wildtiere-und-faehrtenkunde/
  12. https://diejagd.com/26-fauna/saeugetiere/paarhufer/82-damwild-dama-dama
  13. http://wildeswissen.de/2017/03/17/tiersteckbrief-das-muffelwild/
  14. http://www.digitalefolien.de/biologie/gs/tiere/113gaems.html