2 |
Data from: Decoding the dynamics of dental distributions: insights from shark demography and dispersal ...
|
|
|
|
Abstract:
Shark teeth are the most abundant vertebrate fossil, and because tooth size generally correlates with body size, their accumulations document the size structure of populations. Understanding how ecological and environmental processes influence size structure, and how this extends to influence these dental distributions, may offer a window into the ecological and environmental dynamics of past and present shark populations. Here we examine the dental distributions of sand tigers, including extant Carcharias taurus and extinct Striatolamia macrota, to reconstruct the size structure for a contemporary locality and four Eocene localities. We compare empirical distributions against expectations from a population simulation to gain insight into potential governing ecological processes. Specifically, we investigate the influence of dispersal flexibility to and from protected nurseries. We show that changing the flexibility of initial dispersal of juveniles from the nursery and annual migration of adults to the ... : Shark species in the fossil record are largely identified by their tooth morphology due to the poor preservation of cartilaginous skeletons. Striatolamia macrota teeth are identified by emphasized striations on the lingual side relative to the smooth labial side. Anterior teeth (A1-2 and a1-2) are recognized by their long and narrow shape, compared to the lateral and posterior teeth that have a short, blade-like appearance. The anterior teeth have an acute angle between the two roots and have two small lateral cusplets. This tooth position was chosen as a proxy for body size because its large size and distinct morphology compared to other tooth positions within the jaw. Limiting the positions measured from fossil teeth prevents potential for over representation of a single individual within the assemblage. Because the shark body length and tooth crown height relationship established by Shimada (2002) for C. taurus may not be representative and accurate for the Eocene species S. macrota, we reconstruct body ...
|
|
Keyword:
Antarctic; Arctic; body size; Eocene; FOS Biological sciences; Gulf of Mexico; latitudinal gradient; metapopulation; sand tiger
|
|
URL: https://dx.doi.org/10.6071/m3rt05 http://datadryad.org/stash/dataset/doi:10.6071/M3RT05
|
|
BASE
|
|
Hide details
|
|
3 |
How and When to Sign “Hey!” Socialization into Grammar in Z, a 1st Generation Family Sign Language from Mexico
|
|
|
|
In: Languages; Volume 7; Issue 2; Pages: 80 (2022)
|
|
BASE
|
|
Show details
|
|
4 |
Language Assessment Literacy of Middle School English Teachers in Mexico
|
|
|
|
In: Languages; Volume 7; Issue 1; Pages: 32 (2022)
|
|
BASE
|
|
Show details
|
|
5 |
Enseñar y aprender matemáticas en lengua indígena. La experiencia del proyecto T'arhexperakua en Michoacán, México
|
|
|
|
BASE
|
|
Show details
|
|
6 |
The Role of Language in Structuring Social Networks Following Market Integration in a Yucatec Maya Population.
|
|
|
|
BASE
|
|
Show details
|
|
7 |
Learning P’urhepecha as a second language: Reflections from a community-based workshop
|
|
|
|
In: Living Languages • Lenguas Vivas • Línguas Vivas (2022)
|
|
BASE
|
|
Show details
|
|
8 |
History reborn: neoliberalism, utopia, and Mexico's student movements in the work of Roberto Bolaño, Eduardo Ruiz Sosa, and Alonso Ruizpalacios
|
|
|
|
BASE
|
|
Show details
|
|
10 |
Language Ideologies and the Intercultural Universities in Mexico: San Felipe del Progreso and Ixhuatlán de Madero
|
|
|
|
BASE
|
|
Show details
|
|
11 |
The Role of Language in Structuring Social Networks Following Market Integration in a Yucatec Maya Population. ...
|
|
|
|
BASE
|
|
Show details
|
|
13 |
Glottolog 4.4 Resources for Estado de México Otomi
|
|
: Max Planck Institute for Evolutionary Anthropology, 2021
|
|
BASE
|
|
Show details
|
|
14 |
Data for the thesis "Ideologías del Contacto Linguístico en la Ciudad de Oaxaca, México" ...
|
|
|
|
BASE
|
|
Show details
|
|
16 |
What’s your sign for TORTILLA? Documenting lexical variation in Yucatec Maya Sign Languages
|
|
|
|
BASE
|
|
Show details
|
|
17 |
Horizons Without Borders: Wendy Trevino's 'Cruel Fiction' and the Utopian Poetry of the Commune
|
|
|
|
In: Studies in Arts and Humanities ; 5 ; 1 ; 49-66 ; Utopian Acts (2021)
|
|
BASE
|
|
Show details
|
|
18 |
“Our Languages Do Not Die, They are Being Killed”: Indigenismo and its Effects on Indigenous Language Revitalization
|
|
|
|
In: Undergraduate Research Symposium Posters (2021)
|
|
BASE
|
|
Show details
|
|
19 |
A name is not only a referent ; El nombre no es solo un referente
|
|
|
|
In: Domínios de Lingu@gem; Vol 15 No 2 (2021): The quest for interdisciplinarity in the Brazilian Onomastics; 604-611 ; Domínios de Lingu@gem; v. 15 n. 2 (2021): A busca pela interdisciplinaridade na Onomástica brasileira; 604-611 ; 1980-5799 (2021)
|
|
BASE
|
|
Show details
|
|
20 |
Estudio exploratorio de variación léxica del español entre las ciudades de Cádiz y México
|
|
|
|
BASE
|
|
Show details
|
|
|
|