• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Bird tracks from the Miocene of Spain (1 Viewer)

albertonykus

Well-known member
Herrero, C., E. Herrero, J. Martín‑Chivelet, and F. Pérez‑Lorente (2023)
Avian ichnofauna from Sierra de las Cabras tracksite (late Miocene, Jumilla, SE Spain)
Journal of Iberian Geology (advance online publication)
doi: 10.1007/s41513-023-00205-x

The Sierra de las Cabras (Lat. 38° 28′ 53″N, Lon. 1° 24′ 52″W) is an exceptional ichnofossil site of late Miocene age, located in the Prebetic ranges near the town of Jumilla (Murcia Province, SE Spain). The site contains abundant vertebrate ichnofauna preserved in carbonate facies that were deposited in a semi-arid wetland system with shallow ponds and marshes. The ichnofauna includes diverse mammal footprints and trackways, which have been recently studied, as well as bird ones, which are the target of this paper. We report a total of 51 avian footprints spread over two of the three track-bearing stratigraphic surfaces of the site. The detailed study of these ichnites (footprints and trackways) allows their attribution to the ichnogenus Fuscinapeda (Sarjeant and Langston, Texas Memorial Museum Bulletin 36:1–86, 1994), as well as to infer diverse patterns of bird’s behavior consistent with shallow water wetlands avifauna. Also, we discuss about the possible trackmakers, which should correspond to walking birds characterized by long legs, with no hallux or a raised one, which could probably belong to the Gruiformes order. The study confirms the presence of Fuscinapeda in the Iberian Peninsula and completes the characterization of the vertebrate ichnofauna of Sierra de las Cabras, a site that joins the nearby Hoya de la Sima ichnofossil site to yield the largest and most diverse record of vertebrate ichnites of late Miocene age in southern Iberia.
 
Ichnotaxonomy
Morphofamily Avipedidae Sarjeant and Lagnston 1984

Diagnosis. Avian footprints showing three digits, all directed forward. Digits united or separate proximally.Webbing lacking or limited to the most proximal part of the interdigital angles.

Ichnogenus Fuscinapeda Sarjeant and Lagnston 1984

Diagnosis. Avian footprints of small to large size, showing three digits, slim or moderately thick (II to IV). Digit III is characteristically more than 25% longer than the lateral digits. Total interdigital span greater than 95° and often exceeds 110°. Digits united proximally, frequently showing a distinct “heel.” Webbing absent or restricted to the most proximal part of the interdigital angles.

Ichospecies Fuscinapeda isp.
Fred


Fig. 1 Part of the CBR6 trackway (CBR6.5-CBR6.6-CBR6.7) showing the position of the web and the general shape of the avian footprints. The paces are indicated by black lines. Collapse of the digit
walls in all three footprints. Marked III-IV interdigital web.
 

Attachments

  • CBR6.5-CBR6.6-CBR6.7.jpg
    CBR6.5-CBR6.6-CBR6.7.jpg
    317.4 KB · Views: 2
Warning! This thread is more than 1 year ago old.
It's likely that no further discussion is required, in which case we recommend starting a new thread. If however you feel your response is required you can still do so.

Users who are viewing this thread

Back
Top